[Task] Get linter working in CI as a Github action

[tanner-ricks]

[Short description explaining the high-level reason for the pull request]

Changes

• Refactored existing workflows to be callable from new main workflows
• Added an action for setting envars from a .env file
• Added new jobs for each type of lint: prettier, tsc, eslint, and stylelint
• Added dependency caching so that the yarn cache doesn't have to be rebuilt every time
• Added comments to disable lint errors in places to be reevaluated as a part of a follow on ticket
• Applied prettier formatting to whole project

How to test this PR

1. Verify that the linters are running against this PR as actions
2. Verify that the PR is green

How to test this PR (Optional)

1. Make sure other repos are up to date
2. Pull this branch for the sbl-frontend project
3. Restart the stack as necessary
4. Run the e2e tests and verify that they pass