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.

frontend/vite.config.js

@@ -33,7 +33,7 @@ export default defineConfig(({ mode }) => {
             })
         },
         optimizeDeps: {
-            include: ['three', 'three/addons/loaders/GLTFLoader.js'],
+            include: ['three', 'three/addons/loaders/GLTFLoader.js', 'three/addons/loaders/DRACOLoader.js'],
             esbuildOptions: {
                 plugins: [
                     NodeGlobalsPolyfillPlugin({