The new version opens the CPP file and cannot find C (the right that should be found C ++)

[ipyffor]

Steps to Reproduce：

1. Open cpp file, install cpp treesit
2. restart emacs
3. Open cpp file, tip: Warning (treesit): Cannot activate tree-sitter, because language grammar for c is unavailable

Temporarily can be solved by installing the Treesit library of C：

Open c file to install c treesit lib

[renzmann]

In our recipe for C++, we don't have a :requires keyword in there:

https://github.com/renzmann/treesit-auto/blob/1b63bc5e50def3c14ab69e53ed6e7f65a7482016/treesit-auto.el#L130-L135

For instance, we say that gomod requires go

https://github.com/renzmann/treesit-auto/blob/1b63bc5e50def3c14ab69e53ed6e7f65a7482016/treesit-auto.el#L173-L179

If you open a PR that adds this :requries keyword and test that it works for your use case, I'm happy to take it