core: Implement IRDL SameSize options

[PapyChacal]

Should help fix:

• core: We need more variadic inference for compatibility #3064

(Hey GitHub, I said should help fix #3064?)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.87%. Comparing base (77ae3a5) to head (966555a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3067      +/-   ##
==========================================
- Coverage   89.88%   89.87%   -0.02%     
==========================================
  Files         418      418              
  Lines       52581    52657      +76     
  Branches     8134     8153      +19     
==========================================
+ Hits        47261    47324      +63     
- Misses       4009     4018       +9     
- Partials     1311     1315       +4     

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[math-fehr]

LGTM, I would just add a test with 2 variadics and 1 non variadic!

[PapyChacal]

LGTM, I would just add a test with 2 variadics and 1 non variadic!

I directly added a non-variadic between the two variadics instead to avoid bloating!

I also added a test for the verification exception.