If you add "::error file=foo/bar.c:line=123:" before the error message,
it will appear inline.

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(cherry picked from commit 0949b23)

Change the : between file and line to a ,. This should fix this...

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(cherry picked from commit c2f5306)

Remove extra space...

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(cherry picked from commit ac9abe9)

Use ::error and ::warning as appropriate to give better meaning to the
messages.

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(cherry picked from commit 22d12ca)

Let's see if we can get the style issues flagged inline.

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(cherry picked from commit 33326dd)

- Run for PRs against dev instead of main.

- Make the check always succeed but still add annotations.

- Check the style of the total diff instead of each patch on the branch.