convert triage action from python to go

[lostmygithubaccount]

converts the workflow that adds items to the triage project from Python to Go

why?

this was a learning project -- I'm not sure if we should actually merge this

how?

fairly direct conversion of the Python script into Go, with some minor improvements made

what?

this reduces the the time to process all issues from >5 minutes to <1. there's some simple concurrency implemented with goroutines. I tried to take it further but got scared (and rate limited by the API)

next steps

decide if we want to merge this? given some recent discussions in our internal slack, the GH project may not be working as expected :(

[lostmygithubaccount]

I can run it locally...I guess the rate limit is different for actions? not sure

https://docs.github.com/en/rest/overview/resources-in-the-rest-api#requests-from-github-actions

[lostmygithubaccount]

it says no concurrency please :/ https://docs.github.com/en/rest/guides/best-practices-for-integrators#dealing-with-secondary-rate-limits