[Feature]: Build pipeline improvements

The build pipeline for PRs could be improved.

[ ] support PR types (GitHub's default triggers for PRs have problems) adding types fixes some of those
[ ] support concurrency groups (i.e. if a PR receives a new commit, any running builds on that PR should cancel and start over with latest changes)
[ ] support "yarn install" caching to speed up builds (optional)
[ ] run "yarn build", "yarn test" and "yarn lint" as parallel tasks for better performance (requires caching)
[ ] fail a PR if "yarn lint" finds issues
[ ] add prettier support to "yarn lint"
[ ] skip "yarn build" if PR is in draft mode, but run "yarn test/lint" (this is opinionated)

Future pipeline improvements (to be discussed)

add test coverage reports to PR comments automatically
add GitHub hooks that automatically lint/prettier code when pushing changes (to ensure code styling standards)

Ironclad / rivet