Completed GitHub Actions to add labels to an issue in a specific column weekly

[Aveline-art]

Fixes #1956

What changes did you make and why did you make them ?

• Added a series of files for a GHA that adds a certain label to all issues in a certain column, including:
  • the yml file that houses the action
    • this action uses a newly made secret key that skips several API calls to retrieve information from a column
  • the main script (addLabel.js) which performs the action
  • a utility script (findLinkedIssue.js) which was extracted from a previous GHA
• Kept the trigger as workflow_dispatch to facilitate testing. Once the tests are passed, it should be swapped to an on-schedule trigger.
• Commented out code that posts comments so that testing would not disturb our team

Tests to perform after merging:

• Manually run the script and check the logs, which indicates the action the script took for every issue. Reference, maybe, a random 20% of the issues, to check that the labels were added correctly.

Note: this GHA right now is quite heavy (over 200 lines!) because the many API calls required to retrieve the relevant data. I think the natural evolution of this script to clean up the code is to adopt GitHub's GraphQLv4API, whenever it becomes more accessible.

[github-actions]

From your project repository, check out a new branch and test the changes.

git checkout -b Aveline-art-weekly-update-labels gh-pages
git pull https://github.com/Aveline-art/website.git weekly-update-labels

[Aveline-art]

Per this comment, this GHA cannot be ready to merge until design decisions are made. Therefore, this PR will remain as a draft, indefinitely until the design is resolved.

[Aveline-art]

Edits!

[Aveline-art]

@averdin2 @abuna1985 Just a heads up. I'd like to have this out of draft by the end of today and merged before Friday so that the trial can happen. If you'd like to look this over and relay comments, between Tues-Thurs is your chance!

[Aveline-art]

Notes:

#2040 is marked because a timeline is outdated by default unless proven otherwise. Without a timeline to reference, we cannot check for outdatedness.