Refactor ESLint configuration and update code formatting: Standardize quotes in eslint.config.mjs, next.config.js, and various TypeScript files for consistency. Add Prettier as a dependency and include formatting scripts in package.json. Clean up unnecessary whitespace in multiple files to enhance code readability.

app/feedback/[eventId]/page.tsx

@@ -27,7 +27,9 @@ export default function FeedbackPage() {
   const backgroundImage = useBackgroundImage("home", "/got-2.jpg");
 
   const [event, setEvent] = useState<Event | null>(null);
-  const [existingFeedback, setExistingFeedback] = useState<Feedback | null>(null);
+  const [existingFeedback, setExistingFeedback] = useState<Feedback | null>(
+    null
+  );
   const [loading, setLoading] = useState(true);
   const [submitting, setSubmitting] = useState(false);
   const [error, setError] = useState("");
@@ -110,7 +112,7 @@ export default function FeedbackPage() {
 
       setSuccess(true);
       setExistingFeedback(data.feedback);
-      
+
       // Rediriger après 2 secondes
       setTimeout(() => {
         router.push("/events");
@@ -256,4 +258,3 @@ export default function FeedbackPage() {
     </main>
   );
 }
-