Add language icons to the language selector (#21298)

Closes https://github.com/zed-industries/zed/issues/21290

This is a first attempt to show the language icons to the selector.
Ideally, I wouldn't like to have yet another place mapping extensions to
icons, as we already have the `file_types.json` file doing that, but I'm
not so sure how to pull from it yet. Maybe in a future pass we'll
improve this and make it more solid.

<img width="700" alt="Screenshot 2024-11-28 at 16 10 27"
src="https://github.com/user-attachments/assets/683c3bef-5389-470f-a41e-3d510b927b61">

Release Notes:

- N/A

---------

Co-authored-by: Kirill Bulatov <kirill@zed.dev>
Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>

crates/languages/src/jsdoc/config.toml

@@ -5,3 +5,4 @@ brackets = [
   { start = "{", end = "}", close = true, newline = false },
   { start = "[", end = "]", close = true, newline = false },
 ]
+hidden = true

crates/languages/src/lib.rs

@@ -62,6 +62,7 @@ pub fn init(languages: Arc<LanguageRegistry>, node_runtime: NodeRuntime, cx: &mu
                 config.name.clone(),
                 config.grammar.clone(),
                 config.matcher.clone(),
+                config.hidden,
                 Arc::new(move || {
                     Ok(LoadedLanguage {
                         config: config.clone(),
@@ -83,6 +84,7 @@ pub fn init(languages: Arc<LanguageRegistry>, node_runtime: NodeRuntime, cx: &mu
                 config.name.clone(),
                 config.grammar.clone(),
                 config.matcher.clone(),
+                config.hidden,
                 Arc::new(move || {
                     Ok(LoadedLanguage {
                         config: config.clone(),
@@ -104,6 +106,7 @@ pub fn init(languages: Arc<LanguageRegistry>, node_runtime: NodeRuntime, cx: &mu
                 config.name.clone(),
                 config.grammar.clone(),
                 config.matcher.clone(),
+                config.hidden,
                 Arc::new(move || {
                     Ok(LoadedLanguage {
                         config: config.clone(),
@@ -125,6 +128,7 @@ pub fn init(languages: Arc<LanguageRegistry>, node_runtime: NodeRuntime, cx: &mu
                 config.name.clone(),
                 config.grammar.clone(),
                 config.matcher.clone(),
+                config.hidden,
                 Arc::new(move || {
                     Ok(LoadedLanguage {
                         config: config.clone(),

crates/languages/src/regex/config.toml

@@ -6,3 +6,4 @@ brackets = [
   { start = "{", end = "}", close = true, newline = false },
   { start = "[", end = "]", close = true, newline = false },
 ]
+hidden = true