chore: Add agent engine memories and memory revisions modules

PiperOrigin-RevId: 888724734

Author: sararob

src/genai/agentengines.ts

@@ -17,18 +17,21 @@ import {
   NodeUploader,
 } from '@google/genai/vertex_internal';
 import * as converters from './converters/_agentengines_converters.js';
+import {Memories} from './memories.js';
 import {Sandboxes} from './sandboxes.js';
 import {Sessions} from './sessions.js';
 import * as types from './types.js';
 
 export class AgentEngines extends BaseModule {
   public readonly sessions: Sessions;
   public readonly sandboxes: Sandboxes;
+  public readonly memories: Memories;
 
   constructor(private readonly apiClient: ApiClient) {
     super();
     this.sessions = new Sessions(apiClient);
     this.sandboxes = new Sandboxes(apiClient);
+    this.memories = new Memories(apiClient);
   }
 
   async createInternal(