chore: add Husky hooks for commitlint and lint-staged

- Install Husky with commit-msg and pre-commit hooks
- Add commitlint CLI and conventional config for enforcing commit message standards
- Configure pre-commit to run lint-staged for code quality checks
- Update bun.lock with new dev dependencies

This setup ensures consistent commit messages and automated linting before commits.

commitlint.config.mjs

@@ -0,0 +1 @@
+export default { extends: ['@commitlint/config-conventional'] }