Introduce meta checks

[faxe1008]

This PR adds the bare minimum of Meta checks that I saw fit, making local dev a bit more comfy as issues are caught before commiting :^)

[linusg]

What are the modifications here, and how will we keep them in sync?

[ADKaster]

This also doesn't add an actions pipeline to actually enforce these checks :)

[faxe1008]

What are the modifications here, and how will we keep them in sync?

Removing the SerenityOS specific checks, e.g. paths and exceptions. At the moment changes need to be synced manually. I do not know if there is a better way of doing it.

This also doesn't add an actions pipeline to actually enforce these checks :)

I have not worked with github actions beforehand, I wanted to place this PR first before messing around with github workflows. :^) The goal of this PR atm is to catch the issues when developing locally.