chore: add `.pre-commit-hooks.yaml`

[34j]

This PR adds a pre-commit hook.

[jeffa5]

Can you say why we need this?

[34j]

Sorry for your confusion, you could refer to my explanation in an similar PR for another typst formatter:

https://github.com/Enter-tainer/typstyle/pull/91#issuecomment-2162852338

In short by this change typstfmt can be automatically run every time before commiting

[jeffa5]

Ah, so its some config that people reference from their repos to keep things in check. Ok, how does it build typstfmt then? Or does it just assume its in their path?

[34j]

pre-commit creates a virtual environment and installs it there (as I specified rust), so there is no need for the user to manually install it. Although I am not sure what specific commands are used.

[34j]

.pre-commit-config.yaml:

repos
  - repo: https://github.com/34j/typstfmt
    rev: "872b6b9"
    hooks:
      - id: typstfmt

pipx install pre-commit
pre-commit run -a

1-2 minute(s) later

[jeffa5]

Thanks for the explanation!