Add GitHub pull request template

[blink1073]

References

Description

Adds a pull request template to .github/pull_request_template.md so contributors are prompted to fill out standard sections when opening a PR.

Changes

• Added .github/pull_request_template.md with sections for references, description, changes, backwards-incompatible changes, testing, and AI usage disclosure

Backwards-incompatible changes

None

Testing

N/A

AI usage

• Some or all of the content of this PR was generated by AI.
• The human author has carefully reviewed this PR and run this code.
• AI tools and models used: Claude Sonnet

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.82%. Comparing base (f33283c) to head (fa5b847).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #376   +/-   ##
=======================================
  Coverage   90.82%   90.82%           
=======================================
  Files          51       51           
  Lines        2943     2943           
  Branches      410      410           
=======================================
  Hits         2673     2673           
  Misses        190      190           
  Partials       80       80           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.