dx: Detect unnecessary 'as' casts

[aleksanderkatan]

There must be some way, probably using eslint, to do this. If possible, create a package.json script for this, and if not, just run the setup once (and list the steps to achieve this in this issue).

[aleksanderkatan]

Maybe this can be done by https://oxc.rs/docs/guide/usage/linter/type-aware.html?

[aleksanderkatan]

#2162