Improvement: Automatically check to see if a PR actually triggered the action

[tanner-equi]

Maybe GitHub Actions automatically support this and so this is redundant, but it is common to have actions that have multiple triggers. Since this one inherently requires a PR trigger, it would be nice to cleanly exit when that's not the current type.

[pfeerick]

You can do tests such as if: github.event_name != 'pull_request' to run steps conditionally.

• https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows
• https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions

[tanner-equi]

You can do tests such as if: github.event_name != 'pull_request' to run steps conditionally.

That's how I have it set up. My point is that consumers shouldn't need to do that because this action is exclusively for commenting on PRs