Add ReRequestCheckRun

[leonpham0]

Closes out #2357

Adds support for https://docs.github.com/en/rest/checks/runs#rerequest-a-check-run

[google-cla]

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

For more information, open the CLA check for this pull request.

[codecov]

Codecov Report

Merging #2358 (6c6aab9) into master (4174796) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #2358   +/-   ##
=======================================
  Coverage   98.05%   98.05%           
=======================================
  Files         119      119           
  Lines       10487    10497   +10     
=======================================
+ Hits        10283    10293   +10     
  Misses        140      140           
  Partials       64       64           

Impacted Files	Coverage Δ
github/checks.go	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4174796...6c6aab9. Read the comment docs.

[gmlewis]

Thank you, @leonpham0 !
Just one minor tweak, please, then we should be ready for a second LGTM+Approval before merging.

[gmlewis]

Thank you, @leonpham0 !
LGTM.

Awaiting second LGTM+Approval from any other contributor to this repo before merging.

[raynigon]

LGTM

[gmlewis]

LGTM

Thank you, @raynigon !
Merging.