Add workflow for automatic issue headers

[AA-Turner]

xref: #108033 (comment)

As per Alex, please feel free to test at https://github.com/AA-Turner/cpython/issues/new/choose

A

[AlexWaygood]

Javascript isn't my strong suit, but this approach makes sense to me, as far as I can tell! And it seems to work pretty well :)

Will wait for another review before merging, though

[AA-Turner]

For reference, the ocktokit docs:

• https://octokit.github.io/rest.js/v20#issues-get
• https://octokit.github.io/rest.js/v20#issues-update

And the GitHub docs for the return object schemas:

• https://docs.github.com/en/rest/issues/issues?apiVersion=2022-11-28#get-an-issue

A

[hugovk]

This can cause conflicts if you click to edit right after posting, and in the meantime the action adds the header. When you try and save it shows:

It would be nicer to avoid this if possible, but I guess we'd need some of the workarounds from #108033 (comment) onward, like having a somehow textbox near the top.

And, well, we can also get conflicts with the RTD link addition, but that's docs only PRs and this is for most issues.

[AlexWaygood]

This can cause conflicts if you click to edit right after posting, and in the meantime the action adds the header.

In the spirit of EAFP, we could try this out, and see if we get any complaints?

[hugovk]

Sure :)