Add spell checker to CI/CD pipeline

[spotlesscoder]

Feature Description

The spell checker in my vs code goes crazy because of unknown words like "playpos" etc. and I already found at least one real typo

I suggest adding cspell or something else to the project to reduce the likelihood of spelling mistakes in the projects.

At work I do this all the time as I have seen so many bugs caused by typos.
For example

• typos in customer facing texts (which is not that big of a problem most of the time but a bit ugly)
• config settings not being applied because of typing mismatch in expected config variable name and actual variable name (correct in ENV, wrong in code)
• especially when using JavaScript / TypeScript, you might even lose data because of wrong spelling of object properties

[Holzhaus]

We already have this in the form of the codespell hook for the pre-commit framework. These checks also run on CI.

See https://github.com/mixxxdj/mixxx/wiki/Using-Git#set-up-automatic-code-checking for details how to set it up.

[spotlesscoder]

Can I inspect the output of the codespell check?

It seems not to have caught this #12726

[Holzhaus]

You can check it by setting up pre-commit locally and then trying to commit a typo or use pre-commit run -v. On CI you won't see output unless a hook fails.

In that case the issue is likely due to codespell-project/codespell#196.