Closes#13998
/cc @notpeter would you mind giving this branch a go to see if this is
pleasant to use? This impl is not quite what VSC has, but I think it
feels okay?
In this PR, the sequence goes as follows:
1st keypress: "|"
2nd keypress: ""|
3rd keypress: """|"""
Release Notes:
- Improved handling of triple-quote strings in Python.
- 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
Joseph T. Lyons