660: Replace env processing with yargs

[alfardil]

660

Description of changes

Refactor our workflow to use Yargs in CI

Checklist before review

• I have done a thorough self-review of the PR
• Copilot has reviewed my latest changes, and all comments have been fixed and/or closed.
• If I have made database changes, I have made sure I followed all the db repo rules listed in the wiki here. (check if no db changes)
• All tests have passed
• I have successfully deployed this PR to staging
• I have done manual QA in both dev (and staging if possible) and attached screenshots below.

Screenshots

Dev

Staging

[github-actions]

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[alfardil]

/deploy

[alfardil]

/deploy