añadido crd para Song y transladada la logica de /gallery a un controller

app/Http/Controllers/GalleryController.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use Illuminate\Http\Request;
+use Inertia\Inertia;
+
+class GalleryController extends Controller
+{
+    public function index()
+    {
+        return Inertia::render('Gallery');
+    }
+}