[Identity] Support test mode M0

[ccen-stripe]

Summary

Add a Debug screen to terminate SDK flow or proceed as usual

See similar iOS change: stripe/stripe-ios#2493

Motivation

Add test mode for mobile SDK

Testing

• Added tests
• Modified tests
• Manually verified

Screenshots

Changelog

• [Added] Added test mode for the SDK.

[ccen-stripe]

cc @stripe/stripe-identity-observers

[github-actions]

Diffuse output:

OLD: identity-example-release-base.apk (signature: V1, V2)
NEW: identity-example-release-pr.apk (signature: V1, V2)

          │            compressed             │           uncompressed            
          ├───────────┬───────────┬───────────┼───────────┬───────────┬───────────
 APK      │ old       │ new       │ diff      │ old       │ new       │ diff      
──────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────
      dex │   1.8 MiB │   1.8 MiB │  +2.9 KiB │   3.8 MiB │   3.8 MiB │  +5.7 KiB 
     arsc │   1.3 MiB │   1.3 MiB │  +8.7 KiB │   1.3 MiB │   1.3 MiB │  +8.7 KiB 
 manifest │   2.2 KiB │   2.2 KiB │       0 B │   7.9 KiB │   7.9 KiB │       0 B 
      res │ 338.1 KiB │ 338.1 KiB │      -3 B │ 467.5 KiB │ 467.5 KiB │       0 B 
   native │   6.2 MiB │   6.2 MiB │       0 B │  15.8 MiB │  15.8 MiB │       0 B 
    asset │  67.3 KiB │  67.4 KiB │     +13 B │  87.3 KiB │  87.3 KiB │     +13 B 
    other │ 110.3 KiB │ 110.3 KiB │     -20 B │ 250.9 KiB │ 250.9 KiB │       0 B 
──────────┼───────────┼───────────┼───────────┼───────────┼───────────┼───────────
    total │   9.8 MiB │   9.8 MiB │ +11.7 KiB │  21.7 MiB │  21.7 MiB │ +14.5 KiB 

 DEX     │ old   │ new   │ diff              
─────────┼───────┼───────┼───────────────────
   files │     1 │     1 │   0               
 strings │ 19213 │ 19238 │ +25 (+217 -192)   
   types │  5979 │  5983 │  +4 (+195 -191)   
 classes │  4860 │  4864 │  +4 (+174 -170)   
 methods │ 29739 │ 29754 │ +15 (+6125 -6110) 
  fields │ 16579 │ 16599 │ +20 (+2140 -2120) 

 ARSC    │ old  │ new  │ diff         
─────────┼──────┼──────┼──────────────
 configs │  258 │  258 │   0          
 entries │ 5112 │ 5130 │ +18 (+18 -0)

APK

      compressed      │     uncompressed      │                                
──────────┬───────────┼───────────┬───────────┤                                
 size     │ diff      │ size      │ diff      │ path                           
──────────┼───────────┼───────────┼───────────┼────────────────────────────────
  1.3 MiB │  +8.7 KiB │   1.3 MiB │  +8.7 KiB │ ∆ resources.arsc               
  1.8 MiB │  +2.9 KiB │   3.8 MiB │  +5.7 KiB │ ∆ classes.dex                  
 30.7 KiB │     -20 B │ 108.8 KiB │       0 B │ ∆ META-INF/MANIFEST.MF         
  5.6 KiB │     +19 B │   5.5 KiB │     +19 B │ ∆ assets/dexopt/baseline.prof  
    670 B │      -6 B │     538 B │      -6 B │ ∆ assets/dexopt/baseline.profm 
    349 B │      -2 B │     524 B │       0 B │ ∆ res/8E.xml                   
 47.5 KiB │      -2 B │ 108.8 KiB │       0 B │ ∆ META-INF/CERT.SF             
  1.2 KiB │      +2 B │   1.2 KiB │       0 B │ ∆ META-INF/CERT.RSA            
    407 B │      +1 B │     592 B │       0 B │ ∆ res/0N.xml                   
    378 B │      -1 B │     724 B │       0 B │ ∆ res/3n.xml                   
    442 B │      +1 B │     744 B │       0 B │ ∆ res/4F.xml                   
    351 B │      -1 B │     524 B │       0 B │ ∆ res/Ah.xml                   
    636 B │      +1 B │   1.2 KiB │       0 B │ ∆ res/Am.xml                   
    600 B │      +1 B │   1.1 KiB │       0 B │ ∆ res/MP1.xml                  
    532 B │      -1 B │     984 B │       0 B │ ∆ res/WT.xml                   
    407 B │      +1 B │     592 B │       0 B │ ∆ res/iV.xml                   
  1.1 KiB │      -1 B │   2.7 KiB │       0 B │ ∆ res/j9.xml                   
    378 B │      -1 B │     724 B │       0 B │ ∆ res/m8.xml                   
    378 B │      -1 B │     724 B │       0 B │ ∆ res/mX.xml                   
    376 B │      +1 B │     540 B │       0 B │ ∆ res/ue.xml                   
    379 B │      -1 B │     724 B │       0 B │ ∆ res/w2.xml                   
──────────┼───────────┼───────────┼───────────┼────────────────────────────────
  3.2 MiB │ +11.7 KiB │   5.4 MiB │ +14.5 KiB │ (total)

DEX

STRINGS:

   old   │ new   │ diff            
  ───────┼───────┼─────────────────
   19213 │ 19238 │ +25 (+217 -192) 
  + Debug
  + Lb8/d;
  + Lb8/e;
  + Lb8/f;
  + Lb8/g;
  + Lb8/h;
  + Lc8/c;
  + Ld9/c;
  + Ld9/d;
  + Ld9/e;
  + Ld9/f;
  + Ld9/g;
  + Ld9/h;
  + Ld9/i;
  + Ld9/j;
  + Ld9/k;
  + Ld9/l;
  + Ld9/m;
  + Ld9/n;
  + Le7/o0;
  + Lf9/a;
  + Lf9/b;
  + Lf9/c;
  + Lg8/f;
  + Lg8/g;
  + Lg8/h;
  + Lg8/i;
  + Lg8/j;
  + Lg8/k;
  + Lg8/l;
  + Lg8/m;
  + Lg8/n;
  + Lg8/o;
  + Lg8/p;
  + Lg8/q;
  + Lg8/r;
  + Lg8/s;
  + Lg8/t;
  + Lg8/u;
  + Lg8/v;
  + Lh8/b;
  + Lh8/c;
  + Lh8/d;
  + Lh8/e;
  + Li7/c3;
  + Li7/d3;
  + Li7/e3;
  + Lj8/b;
  + Lj8/c;
  + Lj8/d;
  + Ll8/f;
  + Ll8/g;
  + Ll8/h;
  + Ll8/i;
  + Ll8/j;
  + Lo8/d;
  + Lo8/e;
  + Lo8/f;
  + Lo8/g;
  + Lo8/h;
  + Lo8/i;
  + Lo8/j;
  + Lo8/k;
  + Lo8/l;
  + Lp7/w1;
  + Lq4/k;
  + Ls8/a0;
  + Ls8/b0;
  + Ls8/c0;
  + Ls8/d0;
  + Ls8/e0;
  + Ls8/f;
  + Ls8/g;
  + Ls8/h;
  + Ls8/i;
  + Ls8/j;
  + Ls8/k;
  + Ls8/l;
  + Ls8/m;
  + Ls8/n;
  + Ls8/o;
  + Ls8/p;
  + Ls8/q;
  + Ls8/r;
  + Ls8/s;
  + Ls8/t;
  + Ls8/u;
  + Ls8/v;
  + Ls8/w;
  + Ls8/x;
  + Ls8/y;
  + Ls8/z;
  + Lu8/e;
  + Lu8/f;
  + Lu8/g;
  + Lu8/h;
  + Lu8/i;
  + Lu8/j;
  + Lu8/k;
  + Lu8/l;
  + Lu8/m;
  + Lu8/n;
  + Lw8/a1;
  + Lw8/b1;
  + Lw8/c1;
  + Lw8/d0;
  + Lw8/d1;
  + Lw8/e0;
  + Lw8/e1;
  + Lw8/f0;
  + Lw8/f1;
  + Lw8/g0;
  + Lw8/g1;
  + Lw8/h0;
  + Lw8/h1;
  + Lw8/i0;
  + Lw8/i1;
  + Lw8/j0;
  + Lw8/j1;
  + Lw8/k0;
  + Lw8/k1;
  + Lw8/l0;
  + Lw8/l1;
  + Lw8/m0;
  + Lw8/m1;
  + Lw8/n0;
  + Lw8/n1;
  + Lw8/o0;
  + Lw8/p0;
  + Lw8/q0;
  + Lw8/r0;
  + Lw8/s0;
  + Lw8/t0;
  + Lw8/u0;
  + Lw8/v0;
  + Lw8/w0;
  + Lw8/x0;
  + Lw8/y0;
  + Lw8/z0;
  + Lx8/a0;
  + Lx8/b0;
  + Lx8/c0;
  + Lx8/z;
  + Ly8/c;
  + Ly8/d;
  + Ly8/e;
  + Ly8/f;
  + Ly8/g;
  + Ly8/h;
  + Ly8/i;
  + Ly8/j;
  + Ly8/k;
  + Ly8/l;
  + Ly8/m;
  + Ly8/n;
  + Ly8/o;
  + Ly8/p;
  + Ly8/q;
  + Ly8/r;
  + Ly8/s;
  + Ly8/t;
  + Ly8/u;
  + Ly8/v;
  + Ly8/w;
  + Ly8/x;
  + Ly8/y;
  + Lz7/d;
  + Lz7/e;
  + Lz7/f;
  + Lz7/g;
  + Lz7/h;
  + Lz7/i;
  + Lz7/j;
  + Lz7/k;
  + Lz8/b;
  + Proceed
  + S1
  + T1
  + U1
  + V1
  + W1
  + X1
  + Y1
  + Z1
  + [La8/a;
  + [Ld9/i;
  + [Le7/f0;
  + [Lf8/a;
  + [Lf8/c;
  + [Li7/c2;
  + [Li7/j1;
  + [Li7/p1;
  + [Li7/u2;
  + [Lm8/e;
  + [Lp7/b1;
  + [Lp7/x0;
  + [Lp8/c;
  + [Lr8/l;
  + [Ls8/c;
  + [Lt8/b;
  + [Lu8/f;
  + [Lx0/l1;
  + [Lx8/o;
  + [Ly/a0;
  + [Lz7/d;
  + a2
  + b2
  + c2
  + d2
  + debug
  + e2
  + f2
  + g2
  + i2
  + j2
  + k2
  + ~~R8{backend:dex,compilation-mode:release,has-checksums:false,min-api:21,pg-map-id:39ae78e,r8-mode:full,version:4.0.52}
  
  - La8/d;
  - La8/e;
  - La8/f;
  - La8/g;
  - La8/h;
  - Lc9/b;
  - Lc9/c;
  - Lc9/d;
  - Lc9/e;
  - Lc9/f;
  - Lc9/g;
  - Lc9/h;
  - Lc9/i;
  - Lc9/j;
  - Lc9/k;
  - Lc9/l;
  - Lc9/m;
  - Lc9/n;
  - Le8/c;
  - Le8/d;
  - Le8/e;
  - Le8/f;
  - Le8/g;
  - Le8/h;
  - Le8/i;
  - Le9/c;
  - Lf8/j;
  - Lf8/k;
  - Lf8/l;
  - Lf8/m;
  - Lf8/n;
  - Lf8/o;
  - Lf8/p;
  - Lf8/q;
  - Lf8/r;
  - Lf8/s;
  - Lf8/t;
  - Lf8/u;
  - Lf8/v;
  - Li8/b;
  - Li8/c;
  - Li8/d;
  - Lk8/b;
  - Lk8/c;
  - Lk8/d;
  - Lk8/e;
  - Lk8/f;
  - Lk8/g;
  - Lk8/h;
  - Lk8/i;
  - Lk8/j;
  - Lm8/f;
  - Lm8/g;
  - Lm8/h;
  - Lm8/i;
  - Lm8/j;
  - Lm8/k;
  - Ln8/l;
  - Lp8/d;
  - Lp8/e;
  - Lp8/f;
  - Lq8/a0;
  - Lq8/b0;
  - Lq8/c0;
  - Lq8/d0;
  - Lq8/e0;
  - Lq8/g;
  - Lq8/h;
  - Lq8/i;
  - Lq8/j;
  - Lq8/k;
  - Lq8/l;
  - Lq8/m;
  - Lq8/n;
  - Lq8/o;
  - Lq8/p;
  - Lq8/q;
  - Lq8/r;
  - Lq8/s;
  - Lq8/t;
  - Lq8/u;
  - Lq8/v;
  - Lq8/w;
  - Lq8/x;
  - Lq8/y;
  - Lq8/z;
  - Lr7/b0;
  - Lt8/f;
  - Lt8/g;
  - Lt8/h;
  - Lt8/i;
  - Lt8/j;
  - Lt8/k;
  - Lt8/l;
  - Lt8/m;
  - Lt8/n;
  - Lv8/a0;
  - Lv8/a1;
  - Lv8/b0;
  - Lv8/b1;
  - Lv8/c0;
  - Lv8/c1;
  - Lv8/d0;
  - Lv8/d1;
  - Lv8/e0;
  - Lv8/e1;
  - Lv8/e;
  - Lv8/f0;
  - Lv8/f1;
  - Lv8/f;
  - Lv8/g0;
  - Lv8/g1;
  - Lv8/g;
  - Lv8/h0;
  - Lv8/h1;
  - Lv8/h;
  - Lv8/i0;
  - Lv8/i1;
  - Lv8/i;
  - Lv8/j0;
  - Lv8/j1;
  - Lv8/j;
  - Lv8/k0;
  - Lv8/k1;
  - Lv8/k;
  - Lv8/l0;
  - Lv8/l1;
  - Lv8/l;
  - Lv8/m0;
  - Lv8/m1;
  - Lv8/m;
  - Lv8/n0;
  - Lv8/n1;
  - Lv8/n;
  - Lv8/o0;
  - Lv8/o;
  - Lv8/p0;
  - Lv8/p;
  - Lv8/q0;
  - Lv8/q;
  - Lv8/r0;
  - Lv8/r;
  - Lv8/s0;
  - Lv8/s;
  - Lv8/t0;
  - Lv8/t;
  - Lv8/u0;
  - Lv8/u;
  - Lv8/v0;
  - Lv8/v;
  - Lv8/w0;
  - Lv8/w;
  - Lv8/x0;
  - Lv8/x;
  - Lv8/y0;
  - Lv8/y;
  - Lv8/z0;
  - Lv8/z;
  - Ly7/a;
  - Ly7/b;
  - Ly7/c;
  - Ly7/d;
  - Ly7/e;
  - Ly7/f;
...✂

ARSC

ENTRIES:

   old  │ new  │ diff         
  ──────┼──────┼──────────────
   5112 │ 5130 │ +18 (+18 -0) 
  + string/cancelled
  + string/complete_with_test_data
  + string/complete_with_test_data_details
  + string/completed
  + string/failed
  + string/failure_from_test_mode
  + string/finish_mobile_flow
  + string/finish_mobile_flow_details
  + string/preview_user_experience
  + string/preview_user_experience_details
  + string/proceed
  + string/submit
  + string/test_model_content
  + string/test_model_title
  + string/verification_failure
  + string/verification_failure_async
  + string/verification_success
  + string/verification_success_async