🎨 Add logo field to meetups API responses and fetch media relations for meetups

- ✏️ Updated `MeetupController` to include `with('media')` for meetups query.
- 🖼️ Added `logo` to `MeetupResource` via `getFirstMediaUrl`.
- 🧪 Extended feature tests to validate `logo` presence and type in API responses.

app/Http/Controllers/Api/MeetupController.php

@@ -115,6 +115,7 @@ class MeetupController extends Controller
 
         $meetups = $request->user()
             ->meetups()
+            ->with('media')
             ->orderBy('name')
             ->get();