chore(website): set up testing

apps/website/package.json

@@ -5,6 +5,7 @@
 	"scripts": {
 		"dev": "vite",
 		"build": "vite build",
+		"test": "vitest",
 		"preview": "pnpm build && vite preview"
 	},
 	"dependencies": {

apps/website/vite.config.ts

@@ -14,4 +14,7 @@ export default defineConfig({
 			},
 		}),
 	],
+    test: {
+        environment: "happy-dom"
+    }
 });