[Issue #1400] Close issues in done column

[widal001]

Summary

Sets up GitHub action to automatically close issues that are in the "Done" column in our Sprint Board project but are still open in the repo.

• Fixes [Task]: GitHub action to auto-close tickets that are "done" in Sprint Board #1400
• Time to review: 10 mins

Changes proposed

What was added, updated, or removed in this PR.

• Creates a .github/linters/ sub-directory to store custom linters for the project
• Adds a README to explain the purpose of that sub-directory
• Creates a .github/linters/scripts/ sub-directory that stores custom scripts used by the linters
• Creates a .github/linters/queries/ sub-directory that stores graphql queries used by the linters
• Creates linters/scripts/close-issues-in-done-col.sh which closes issues in the done column
• Creates a .github/workflows/ci-project-linters.yml which does a dry run of all project linters
• Creates a .github/workflows/lint-close-done-issues.yml which runs all of the project linters on a schedule

Context for reviewers

Testing instructions, background context, more in-depth details of the implementation, and anything else you'd like to call out or ask reviewers. Explain how the changes were verified.

• View the dry run of the linter here
• Read more about the linter package in the README

Additional information

Screenshots, GIF demos, code examples or output to help show the changes working as expected.

Output from the dry run:

Which matches the list of tickets that are "Done" but still open:

[coilysiren]

LGTM, there's just a stray comment

[sumiat]

Thanks for clarifying how often this happens - linter runs once a day at midnight ET! how it will work LGTM!