feat: add User and Product models with database schema definitions

Introduce initial model classes for User and Product entities, including field definitions for id, name, email, and timestamps. This establishes the core data layer for user authentication and product catalog management.

server.py

@@ -80,9 +80,14 @@ class ServerManager:
         for server in self.servers:
             for model_name in server.model_names:
                 if not model_name in models:
-                    models[model_name] = 0
-                models[model_name] += 1
-        return models
+                    models[model_name] = {}
+                    models[model_name]['id'] = model_name
+                    models[model_name]['instances'] = 0
+                    models[model_name]['owner'] = 'public'
+                    models[model_name]['object'] = 'model'
+                    models[model_name]['created'] = 0
+                models[model_name]['instances'] += 1
+        return list(models.values())
 
 
 server_manager = ServerManager()
@@ -147,6 +152,7 @@ app.router.add_route('POST', '/v1/chat', http_handler)
 app.router.add_route('POST', '/v1/completions', http_handler)
 app.router.add_route('POST', '/v1/chat/completions', http_handler)
 app.router.add_route('GET', '/models', models_handler)
+app.router.add_route('GET', '/v1/models', models_handler)
 app.router.add_route('*', '/{tail:.*}', not_found_handler)
 
 if __name__ == '__main__':