feat: integrate Draco compression for 3D models in backoffice

- Added support for uploading and compressing GLB models using Draco in the backoffice.
- Implemented commands for importing and re-compressing 3D models.
- Updated model resource to handle 3D model uploads and validations.
- Introduced a new script for compressing GLB files with Draco.
- Modified Vite configuration to remove GLB files from the build output.
- Updated package dependencies to include GLTF-transform libraries for handling 3D models.
- Added tests to ensure proper functionality of 3D model handling and compression.

backoffice/database/migrations/2026_11_01_100000_add_modello_3d_to_modelli_table.php

@@ -0,0 +1,34 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+/**
+ * Modello 3D caricato dal backoffice: l'originale non compresso (disco privato, conservato per
+ * sviluppi futuri) e la copia compressa con Draco servita al configuratore (disco public).
+ */
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('modelli', function (Blueprint $table) {
+            $table->string('modello_3d')->nullable()->after('file_modello');
+            $table->string('modello_3d_draco')->nullable()->after('modello_3d');
+            $table->string('modello_3d_nome')->nullable()->after('modello_3d_draco');
+            $table->unsignedBigInteger('modello_3d_dimensione')->nullable()->after('modello_3d_nome');
+            $table->unsignedBigInteger('modello_3d_draco_dimensione')->nullable()->after('modello_3d_dimensione');
+            $table->timestamp('modello_3d_aggiornato_at')->nullable()->after('modello_3d_draco_dimensione');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('modelli', function (Blueprint $table) {
+            $table->dropColumn([
+                'modello_3d', 'modello_3d_draco', 'modello_3d_nome',
+                'modello_3d_dimensione', 'modello_3d_draco_dimensione', 'modello_3d_aggiornato_at',
+            ]);
+        });
+    }
+};