ci: add GitHub Actions pipeline for typecheck, lint, and tests on PRs

[Dhirenderchoudhary]

Hi @fazlerocks @panda-sandeep

I was looking at the passmark repo and noticed there's no CI pipeline set up yet — no typecheck, lint, or test runs on PRs.

I was thinking of adding a GitHub Actions workflow that runs on every PR:

• TypeScript build check
• ESLint + Prettier
• Vitest unit tests
• Playwright integration tests (using repo secrets for API keys)

Also a PR title checker and a PR template to go along with it.

Would this be a good contribution to pick up?
Wanted to check before I start so I'm not duplicating something already in progress.