Add PureScript LSP/Highlighting support (#6911)

This PR adds basic support for the language using the
`purescript-language-server`.

Release Notes:

- Added support for PureScript.

crates/zed/src/languages.rs

@@ -23,6 +23,7 @@ mod language_plugin;
 mod lua;
 mod nu;
 mod php;
+mod purescript;
 mod python;
 mod ruby;
 mod rust;
@@ -258,6 +259,13 @@ pub fn init(
         ],
     );
 
+    language(
+        "purescript",
+        tree_sitter_purescript::language(),
+        vec![Arc::new(purescript::PurescriptLspAdapter::new(
+            node_runtime.clone(),
+        ))],
+    );
     language("elm", tree_sitter_elm::language(), vec![]);
     language("glsl", tree_sitter_glsl::language(), vec![]);
     language("nix", tree_sitter_nix::language(), vec![]);