[Feat] no-danger: allow custom components as option for no-danger

[akulsr0]

Closes #3434

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.76%. Comparing base (014ee05) to head (fdd934d).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3748      +/-   ##
==========================================
+ Coverage   94.45%   97.76%   +3.30%     
==========================================
  Files         134      134              
  Lines        9613     9618       +5     
  Branches     3486     3488       +2     
==========================================
+ Hits         9080     9403     +323     
+ Misses        533      215     -318     

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[akulsr0]

Let me know if anything is pending here else can we proceed towards merging it?

[ljharb]

it's good to land; i want to cut a patch release before landing new semver-minor things, is all :-)