add AI Policy check to PR template

[orbeckst]

Fixes #5440

Changes made in this Pull Request:

• add check box to have read and understood AI policy

LLM / AI generated code disclosure

LLMs or other AI-powered tools (beyond simple IDE use cases) were used in this contribution: no

PR Checklist

• Issue raised/referenced?
• Tests updated/added?
• Documentation updated/added?
• package/CHANGELOG file updated?
• Is your name in package/AUTHORS? (If it is not, add it!)
• LLM/AI disclosure was updated.

Developers Certificate of Origin

I certify that I can submit this code contribution as described in the Developer Certificate of Origin, under the MDAnalysis LICENSE.

[read-the-docs-community]

Documentation build overview

📚 MDAnalysis | 🛠️ Build #33806749 | 📁 Comparing f213f17 against latest (83bc9a2)

  🔍 Preview build  

2 files changed

± index.html
± documentation_pages/analysis/wbridge_analysis.html

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.87%. Comparing base (83bc9a2) to head (f213f17).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #5448   +/-   ##
========================================
  Coverage    93.87%   93.87%           
========================================
  Files          182      182           
  Lines        22510    22510           
  Branches      3202     3202           
========================================
  Hits         21131    21131           
  Misses         917      917           
  Partials       462      462           

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