Improve pre-commit hooks and use of ruff

[fpgmaas]

Proposed changes

Currently, there are some issues with the use of pre-commit hooks and ruff:

• We define the version of ruff three times, and each time a different version:
  • >=0.5 in pyproject.toml
  • 0.0.291 in .pre-commit-config.yaml
  • 0.5.1 in ci/lint.yaml
• ruff format is not part of the pre-commit hooks. The codebase currently contains unformatted code.
• pre-commit is missing as a development dependency
• We run the unit tests in the pre-commit hooks, which seems a bit superfluous.

This PR proposes to;

• Choose one version of ruff, in the pre-commit hooks.
• Add ruff format as part of the pre-commit hooks.
• Remove pytest from the pre-commit hooks.

[SemyonSinchenko]

I left some comments about Ruff.

[SemyonSinchenko]

LGTM overall, we can merge it after resolving conflicts. @fpgmaas fyi

[fpgmaas]

LGTM overall, we can merge it after resolving conflicts. @fpgmaas fyi

@SemyonSinchenko Thanks! Resolved conflicts.

[SemyonSinchenko]

I left one more comment.

[SemyonSinchenko]

LGTM

[SemyonSinchenko]

@fpgmaas Thanks for the contribution!