feat: add basic CI & doc deployments

[jumpy-cat]

Description

Added github-actions workflow that runs type-checking, tests, and builds+uploads the typedoc docs. Other changes made include adjusting tsconfig.json to fix some issues, removing the docs/ directory & adding it to .gitignore, and making the timestamp checks in reminder.test.ts less strict so the delayed output of the mock bustime servers pass.

Type of Change

• New feature (feat)
• Bug fix (fix)
• Refactor / code improvement
• Dependency / build update
• Documentation
• Other (explain)

Related Issues

Progress towards #30, soft prereq for #40 and mbusdev/bluebus-flutter#98

Changes Made

• Flutter: n/a
• Backend (TypeScript):
  • adjusted module resolution from Node to bundler: Node is deprecated and changing to nodenext would require refactoring some imports
  • modified reminder test suite & main server to have the option of using mock bustime servers and loosened the timestamp checks
    • this weakens the test suite a bit, but the main potential problem (bustime servers responding with human readable time when we ask for unix ts) is still being caught
    • the test still might be a bit flaky due to firebase auth not being setup and the reminder test suite having the side-effect of attempting to send actual notifications, waiting to see if this is an actual problem
  • reminders: exported more things to fix issues with docs
  • removed the legacy directory & code
• Firebase / Shared: n/a

Testing Done

Backend logic is unchanged, confirmed typedoc ftp uploads behave properly.

Checklist

• Commit messages follow Conventional Commits commits can be squashed when merging
• PR title follows [type](scope): short description
• PR target branch is not main and is our current working update branch (e.g. maizebus2.1)
• No print() / debugPrint() / console.log() left in production code
• Secrets / keys not committed