Adding pre commit

[emarondan]

• added config files for pre-commit hooks
• excluding bandit checks and test dir
• added pre-commit to github CI checks
• running pre-commit hooks for all the code

[Gallaecio]

This is not good.

The “unused import” thing should generally be ignored in the main __init__.py of a package, where we usually put imports to make it easier for people to import them, e.g. from scrapy_zyte_smartproxy import ZyteSmartProxyMiddleware instead of from scrapy_zyte_smartproxy.middleware import ZyteSmartProxyMiddleware.

[Gallaecio]

The error seems to be about a test expectation unrelated to your changes, but it would be nice to fix it before merging this, be it in this PR or in a separate one.

[emarondan]

The error seems to be about a test expectation unrelated to your changes, but it would be nice to fix it before merging this, be it in this PR or in a separate one.

Ok, no problem.. I will fix it in this PR