This does not try to heuristically pick a comment style based on
surroundings anyhow. It does improve our story around uncommenting
though.
Fixes#10113.
Release Notes:
- Fixed "Toggle comment" action not working in presence of non-default
line comments such as doc comments in Rust
([#10113](https://github.com/zed-industries/zed/issues/10113)).
- Moves languages module from `zed` into a separate crate. That way we
have less of a long pole at the end of compilation.
- Removes moot dependencies on editor/picker. This is totally harmless
and might help in the future if we decide to decouple picker from
editor.
Before:
```
Number of crates that depend on 'picker' but not on 'editor': 1
Total number of crates that depend on 'picker': 13
Total number of crates that depend on 'editor': 30
```
After:
```
Number of crates that depend on 'picker' but not on 'editor': 5
Total number of crates that depend on 'picker': 12
Total number of crates that depend on 'editor': 26
```
The more crates depend on just picker but not editor, the better in that
case.
Release Notes:
- N/A