Support bracket colorization (rainbow brackets) (#43172)

Deals with https://github.com/zed-industries/zed/issues/5259

Highlights brackets with different colors based on their depth.
Uses existing tree-sitter queries from brackets.scm to find brackets,
uses theme's accents to color them.


https://github.com/user-attachments/assets/cc5f3aba-22fa-446d-9af7-ba6e772029da

1. Adds `colorize_brackets` language setting that allows, per language
or globally for all languages, to configure whether Zed should color the
brackets for a particular language.

Disabled for all languages by default.

2. Any given language can opt-out a certain bracket pair by amending the
brackets.scm like `("\"" @open "\"" @close) ` -> `(("\"" @open "\""
@close) (#set! rainbow.exclude))`

3. Brackets are using colors from theme accents, which can be overridden
as

```jsonc
"theme_overrides": {
  "One Dark": {
    "accents": ["#ff69b4", "#7fff00", "#ff1493", "#00ffff", "#ff8c00", "#9400d3"]
  }
},
```

Release Notes:

- Added bracket colorization (rainbow brackets) support. Use
`colorize_brackets` language setting to enable.

---------

Co-authored-by: MrSubidubi <dev@bahn.sh>
Co-authored-by: Lukas Wirth <lukas@zed.dev>
Co-authored-by: MrSubidubi <finn@zed.dev>
Co-authored-by: Lukas Wirth <me@lukaswirth.dev>
Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>

docs/src/configuring-languages.md

@@ -58,6 +58,7 @@ You can customize a wide range of settings for each language, including:
 - [`soft_wrap`](./configuring-zed.md#soft-wrap): How to wrap long lines of code
 - [`show_completions_on_input`](./configuring-zed.md#show-completions-on-input): Whether or not to show completions as you type
 - [`show_completion_documentation`](./configuring-zed.md#show-completion-documentation): Whether to display inline and alongside documentation for items in the completions menu
+- [`colorize_brackets`](./configuring-zed.md#colorize-brackets): Whether to use tree-sitter bracket queries to detect and colorize the brackets in the editor (also known as "rainbow brackets")
 
 These settings allow you to maintain specific coding styles across different languages and projects.