Motivation

Add a pull request template to guide contributors and ensure consistent PR descriptions across the project. This helps maintainers review PRs more effectively by prompting authors to explain their motivation and implementation approach.

Based on the template from NiceGUI.

Implementation

Add a standard GitHub PR template at .github/PULL_REQUEST_TEMPLATE.md with three sections:

• Motivation: Why the change is needed
• Implementation: How it works
• Progress: Checklist for completion, hardware testing, and documentation

Progress

• The implementation is complete.
• Tested on hardware (or is not necessary).
• Documentation has been updated (or is not necessary).