Implement model optimization and caching for 3D characters

- Added a new modelsProxyRouter to handle requests for optimized 3D character models.
- Introduced modelsProxyService to manage GLB file optimization using gltf-transform with Draco compression.
- Updated app.js to include the new modelsProxyRouter for API access.
- Enhanced .gitignore to exclude model cache files.
- Added scripts for optimizing GLB models and updated README with optimization instructions.
- Integrated DRACOLoader in Character3D.vue for loading compressed models.
- Updated FamilyView.vue to streamline character rendering logic.

backend/package.json

@@ -37,7 +37,8 @@
     "sharp": "^0.34.3",
     "socket.io": "^4.7.5",
     "uuid": "^11.1.0",
-    "ws": "^8.18.0"
+    "ws": "^8.18.0",
+    "@gltf-transform/cli": "^4.3.0"
   },
   "devDependencies": {
     "sequelize-cli": "^6.6.2"