GitHub Action Annotations

[peternewman]

Would you be interested in a PR to the other repo, or probably a repo transfer, to add a cpplint problem matcher:
https://github.com/actions/toolkit/blob/master/docs/problem-matchers.md

The way I've done it elsewhere is a standalone action which just provides the problem matcher:
https://github.com/codespell-project/codespell-problem-matcher

But also Git submodule that into the main action so it gets applied when it's used:
https://github.com/codespell-project/actions-codespell/tree/master/codespell-problem-matcher

Although given your main action is effectively just a workflow template currently, the latter might be a bit irrelevant for now, as I mentioned in:
cpplint/GitHub-Action-for-cpplint#3 (comment)

[tkruse]

In general it seems like a useful addition in the context of github actions. However I personally only have limited time for maintaining such integrations, and I worry users may start depending on something that will break. If you feel like you have plenty of time to create this and come back a few times to fix issues, I will try to support you.

[cclauss]

Hi Peter are you interested to go at this again in one of our two repos?

https://github.com/cpplint