feat(otp): create otp factor

[pradel]

No description provided.

[codecov]

Codecov Report

Merging #1042 into master will increase coverage by 0.11%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1042      +/-   ##
==========================================
+ Coverage   92.70%   92.82%   +0.11%     
==========================================
  Files          83       84       +1     
  Lines        2001     2034      +33     
  Branches      445      451       +6     
==========================================
+ Hits         1855     1888      +33     
  Misses        143      143              
  Partials        3        3              

Impacted Files	Coverage Δ
packages/factor-otp/src/index.ts	100.00% <100.00%> (ø)

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