Update Github UI on ok-to-test comment event

[zakisk]

This will allow repository owner to make a PR ready to test by sending ok-to-test comment event and update Github UI accordingly when there is no matching Pipelinerun in .tekton directory.

SRVKP-4345

[chmouel]

this code is security sensitive let's make sure to review this thoroughly

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 20.00000% with 16 lines in your changes missing coverage. Please review.

Project coverage is 64.56%. Comparing base (be424e4) to head (41cf947). Report is 107 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/pipelineascode/match.go	0.00%	12 Missing and 1 partial :warning:
pkg/matcher/annotation_matcher.go	57.14%	2 Missing and 1 partial :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1733      +/-   ##
==========================================
- Coverage   64.63%   64.56%   -0.08%     
==========================================
  Files         146      146              
  Lines       11264    11284      +20     
==========================================
+ Hits         7281     7285       +4     
- Misses       3452     3466      +14     
- Partials      531      533       +2     

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.