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/src/utils/axios.js

@@ -48,3 +48,4 @@ apiClient.interceptors.response.use(response => {
 });
 
 export default apiClient;
+export { getApiBaseURL };