🔧 Add Tailwind CSS directives support in biome config (fastapi#2029)

Author: alejsdev

frontend/biome.json

@@ -37,5 +37,10 @@
       "quoteStyle": "double",
       "semicolons": "asNeeded"
     }
+  },
+  "css": {
+    "parser": {
+      "tailwindDirectives": true
+    }
   }
 }