Add GitHub Action to auto-close non-responsive reporter feedback issues after 3 days

[jeffpaul]

Description of the Change

This PR adds a new GitHub Action that checks issues with the reporter feedback label and if there's no response in 3 days will auto-close the issue.

Alternate Designs

Keep as-is with no automation or adjust the schedule this runs, the days to wait until closing, and/or the closing comment.

Benefits

No longer have to check the reporter feedback label weekly to see which items can be closed.

Possible Drawbacks

No identified.

Verification Process

This is current running on https://github.com/desktop/desktop/blob/development/.github/no-response.yml && https://github.com/github/docs/blob/6d7b73256f86778cd0e0045d54a6e9acea128ce6/.github/workflows/no-response.yaml and is well-documented at https://github.com/lee-dohm/no-response so I'm fairly comfortable this will work.

Checklist:

• I have read the CONTRIBUTING document.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my change.
• All new and existing tests passed.

Applicable Issues

n/a

Changelog Entry

### Added
- Project automation via GitHub Action (props to the magnificent @jeffpaul).