🔧 chore: add biome config for Tailwind CSS and CSS module declarations

biome.json

@@ -0,0 +1,14 @@
+{
+  "$schema": "https://biomejs.dev/schemas/2.4.7/schema.json",
+  "css": {
+    "linter": {
+      "enabled": true
+    },
+    "parser": {
+      "tailwindDirectives": true
+    },
+    "formatter": {
+      "enabled": true
+    }
+  }
+}

src/css.d.ts

@@ -0,0 +1,4 @@
+declare module "*.css" {
+	const content: Record<string, string>;
+	export default content;
+}