include generated files

[FreddieGilbraith]

Some projects require the generated files to be present in a tree-sitter repository to use them. Noteably the helix editor is currently refferencing a fork of this grammar and therefore can not be updated to the newest version.

Please can we include the built files in the repo.

I've not included a Github Actions check to ensure the generated files are up-to-date, but am happy to add one if you'd like.

Thanks :)