Add a throttling module to the OSPO actions

[ahpook]

[jmeridth]

@ahpook excellent idea. I have used the operations-per-run input for the Stale Github Action. It helps a user stay within their API rate limit.

I've also been ramping up on github3.py (the github library these Github Actions use to connect to the GitHub API) for another feature and know it has some things we can use.

[jmeridth]

https://docs.github.com/en/rest/using-the-rest-api/best-practices-for-using-the-rest-api?apiVersion=2022-11-28 is the core docs. There may be a lib or action already that can do this for us before doing it ourselves.

Specific to github/issue-metrics#217 issues currently

[electriquo]

i think we can do something as this