Install pre-commit hooks in Copilot setup

[ricardoV94]

Pre-commit will not install hooks by default, and Copilot has no network access to install afterwards. Pre-install during setup

Description

Related Issue

• Closes #
• Related to #

Checklist

• Checked that the pre-commit linting/style checks pass
• Included tests that prove the fix is effective or that the new feature works
• Added necessary documentation (docstrings and/or example notebooks)
• If you are a pro: each commit corresponds to a relevant logical change

Type of change

• New feature / enhancement
• Bug fix
• Documentation
• Maintenance
• Other (please specify):

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📚 Documentation preview 📚: https://pytensor--1650.org.readthedocs.build/en/1650/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.58%. Comparing base (1697264) to head (5c63b73).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1650   +/-   ##
=======================================
  Coverage   81.58%   81.58%           
=======================================
  Files         242      242           
  Lines       53778    53778           
  Branches     9469     9469           
=======================================
  Hits        43877    43877           
  Misses       7421     7421           
  Partials     2480     2480           

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