feat(cluster,api,models,cli): add cluster-aware model catalog deployments and request routing

ts/api/handlers/index.ts

@@ -5,5 +5,6 @@
  */
 
 export { ChatHandler } from './chat.ts';
+export { ClusterHandler } from './cluster.ts';
 export { ModelsHandler } from './models.ts';
 export { EmbeddingsHandler } from './embeddings.ts';