Add Request Review Trigger for PR Review Comments

[saadmk11]

closes https://github.com/python/bedevere/issues/499

[codecov[bot]]

Codecov Report

Merging #516 (62c8794) into main (be82c42) will not change coverage. The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #516   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           18        18           
  Lines         1998      2052   +54     
  Branches       227       229    +2     
=========================================
+ Hits          1998      2052   +54     

Flag	Coverage Δ
Python_3.10.8	100.00% <100.00%> (ø)
Python_3.11.0	100.00% <100.00%> (ø)
Python_3.8.14	100.00% <100.00%> (ø)
Python_3.9.15	100.00% <100.00%> (ø)

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Impacted Files	Coverage Δ
bedevere/stage.py	100.00% <100.00%> (ø)
tests/test_stage.py	100.00% <100.00%> (ø)