feat: support highlighting for code snippets

extension.toml

@@ -41,4 +41,4 @@ name = "Biome Language Server"
 
 [grammars.gritql]
 repository = "https://github.com/honeycombio/tree-sitter-gritql"
-rev        = "9ffe44d15359476af27f07130807a5ac979e477f"
+rev        = "3a48815250680e85a44b3ab2fd74031ef3c66b7d"

languages/grit/injections.scm

@@ -0,0 +1,19 @@
+; By default, highlight all snippetContent nodes as JavaScript
+((snippetContent) @injection.content
+  (#set! injection.language "javascript"))
+
+
+; The rule below only matches the top-level code snippet before "where"
+; Currently, tree-sitter doesn't have a way to bind the target language
+; to all snippetContent nodes
+; Upstream changes to both tree-sitter and tree-sitter-gritql
+; are needed in order to fully support all CSS code snippets
+
+; Highlight snippetContent as CSS if it's specified
+(source_file
+  language: (langdecl
+    name: (languageName) @injection.language)
+  pattern: (patternWhere
+    pattern: (codeSnippet
+      source: (backtickSnippet
+	      content: (snippetContent) @injection.content))))