[FEAT]: Add fail_on_error option to suppress failing

[Uzlopak]

Describe the need

I have a workflow, where i remove a label from a PR. It would be good to add an option to the action.yml which just outputs a warning and not a failure, so e.g. if the label is already removed it does not show an error in the overview.

If we agree on the name of the option, I would provide a PR.

SDK Version

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API Version

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Relevant log output

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Code of Conduct

• I agree to follow this project's Code of Conduct

[github-actions]

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