feat(memory)!: Uses the new MemoryEntry schema for all memory related components.

BREAKING CHANGE. This commit changes all memory related interface to using the newly introduced MemoryEntry class.

PiperOrigin-RevId: 758464887

src/google/adk/runners.py

@@ -18,7 +18,9 @@ import asyncio
 import logging
 import queue
 import threading
-from typing import AsyncGenerator, Generator, Optional
+from typing import AsyncGenerator
+from typing import Generator
+from typing import Optional
 import warnings
 
 from deprecated import deprecated