pre-commit hooks setup

[thibaudcolas]

Problem statement

Would help catch issues like me forgetting to run Prettier formatting

Proposed solution

Copy https://github.com/wagtail/cookiecutter-wagtail-package/blob/main/.pre-commit-config.yaml

And relevant docs + prek-specific information

Alternative solutions

No response

Additional context

No response

Working on this

Assigning to myself