Properly separate CI checks

[twynb]

As of current, the lint CI check failing isn't actually displayed anywhere, except if you look into that specific part of the CI check.

The CI check should be separated into separate jobs for linting and testing, each of which should indeed throw a fail if it does fail.

[phtngyn]

I think we can make CI fail if Lint fails.
Then add ruff to lint-staged in package.json

  "lint-staged": {
    "*.{vue,ts,json}": "eslint --fix",
    "*.{py,fake_ext}": "black",
    "*.{fake_ext,py}": "ruff check --fix"
  }

and update with npx simple-git-hooks so that each commit is properly formatted and linted before being pushed up.

[twynb]

What I am suggesting is not having one CI job that runs both linting and testing, but separate jobs for linting and tests. So we still get the feedback if linting fails, but can tell if what failed is the linting or the actual tests.