Make Vale's format support extensible

[jdkato]

See https://github.com/errata-ai/vale/issues/688#issuecomment-1766080782 for a related comment.

[XVilka]

One way to do that is to work with Tree-Sitter grammars the way NeoVim does—it will allow you to analyze comments in every language, depending on the syntax or so-called "injections".

[weaversam8]

+1 for tree-sitter- there are grammars for nearly every language and tree-sitter makes it easy to design your own.

[jdkato]

Many of Vale's supported programming languages now use Tree-sitter parsers.

I think an interesting way to make this "extensible" would be to expose the underlying queries, allowing users to decide exactly what parts of the file is linted.