Added --title and --description flags to tea pr create command
documentation to clarify correct syntax and prevent errors.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Add structured PR template to standardize pull request format.
Template includes sections for description, decisions, benefits,
and a checklist for conventional commits and branch naming.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>