Add regex syntax highlighting for JS and TS (#7851)

<img width="544" alt="SCR-20240215-pvzy"
src="https://github.com/zed-industries/zed/assets/67913738/e4d463a6-1795-4728-ac24-6c8e03e7ea5b">

Release Notes:

- Added support for regex syntax highlighting in `JS` and `TS`.

crates/languages/src/lib.rs

@@ -109,6 +109,7 @@ pub fn init(
         ("purescript", tree_sitter_purescript::language()),
         ("python", tree_sitter_python::language()),
         ("racket", tree_sitter_racket::language()),
+        ("regex", tree_sitter_regex::language()),
         ("ruby", tree_sitter_ruby::language()),
         ("rust", tree_sitter_rust::language()),
         ("scheme", tree_sitter_scheme::language()),
@@ -318,6 +319,7 @@ pub fn init(
     );
     language!("scheme");
     language!("racket");
+    language!("regex");
     language!("lua", vec![Arc::new(lua::LuaLspAdapter)]);
     language!(
         "yaml",