Add pre-commit

[michaelosthege]

Adds a pre-commit configuration including

• Automatic code formatting using ruff and isort
• Runs mypy to check against incorrect type hints
• GitHub action to run the pre-commit
• GitHub action to run the tests

The GitHub actions will only start running after the merge.
If I remember correctly, only PRs by maintainers run GitHub Actions that were not present on the default branch already.

Changes to fix typing errors:

• CRIController._wait_for_answer returned False on unknown message IDs → changed to return None to match the signature
• CRIController.wait_for_kinematics_ready implementation was not compatible with advertised timeout: float | None signature → changed to timeout: float
• CRIController.upload_file never returned True as described in the docstring → fixed

[michaelosthege]

@cpr-bar could you take a look at this? I want to open another PR soon, and it would be much simpler if we can get this one merged first.

[cpr-bar]

Working on it. Sorry for the delay.

[michaelosthege]

Working on it. Sorry for the delay.

thanks! I just rebased the branch on latest master.

I'd be happy to have a short call to talk about next steps. I'm happy to contribute if we can speed things up.

[cpr-bar]

It's now in main. Thanks again for your contribution.

Yes, let's talk. I will send you a mail.