## Description
rust-analyzer is unfortunately not smart enough to use a folder's
.gitignore (or similar) when looking for rust files to analyze, meaning
that when it finds a large enough folder (e.g: .git, .direnv) it
completely dies going through it searching for rust files.
This commit adds a filter of common folders that are big enough to
potentially choke rust-analyzer. The list could be amended in the
future.
## Checklist
- [X] I've read the
[CONTRIBUTING](https://github.com/LazyVim/LazyVim/blob/main/CONTRIBUTING.md)
guidelines.