Add ability to benchmark pull requests

[rashidnhm]

Context: Add ability to benchmark a pull request

Description of the Change:
This pull request adds the ability to benchmark a PR.

When a user with either admin or maintain permissions comments /benchmark on a pull request, this workflow will trigger a webhook to benchmarks repo with sufficient details to benchmark the PR, it is then up to the benchmarks action to report back with results.

Once the webhook is sent, a 👍 reaction is added to the comment to indicate it was successful.

Benefits:
New feature.

Possible Drawbacks:
This is an MVP product, we may want to iterate on this to add further information or functionality. However, the current state is sufficient for the basic needs of benchmarking.

Related GitHub Issues:
None. sc-73314

[github-actions]

Hello. You may have forgotten to update the changelog!
Please edit doc/releases/changelog-dev.md with:

• A one-to-two sentence description of the change. You may include a small working example for new features.
• A link back to this PR.
• Your name (or GitHub username) in the contributors section.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.58%. Comparing base (5f4169a) to head (98e31ff).
Report is 12 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6274      +/-   ##
==========================================
- Coverage   99.63%   99.58%   -0.06%     
==========================================
  Files         445      443       -2     
  Lines       42433    42230     -203     
==========================================
- Hits        42278    42053     -225     
- Misses        155      177      +22     

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