chore: Extract languages from zed crate (#8270)

- 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

crates/languages/src/bash/config.toml

@@ -0,0 +1,10 @@
+name = "Shell Script"
+grammar = "bash"
+path_suffixes = ["sh", "bash", "bashrc", "bash_profile", "bash_aliases", "bash_logout", "profile", "zsh", "zshrc", "zshenv", "zsh_profile", "zsh_aliases", "zsh_histfile", "zlogin", "zprofile", ".env"]
+line_comments = ["# "]
+first_line_pattern = "^#!.*\\b(?:ba|z)?sh\\b"
+brackets = [
+    { start = "[", end = "]", close = true, newline = false },
+    { start = "(", end = ")", close = true, newline = false },
+    { start = "\"", end = "\"", close = true, newline = false, not_in = ["comment", "string"] },
+]