Speed up linting

[waldekmastykarz]

Let's see if we can speed up linting. Right now, on my M2 MBAir linting takes ~50s, which significantly impacts our builds and running the full test setup.

I had a quick look and found out, that an easy win would be to use caching with --cache --cache-strategy content so that eslint only checks modified files. A quick test showed a significant drop from ~50s to ~1s when no files modified and ~6s with one modified file. What's also great is that we can add it to our CI pipe, significantly shortening our build times.

[Adam-it]

Or we may just drop linting 🤷.
Sorry 🙏 I had to write it 😂