Adding long term, short term, entity and contextual memory

src/crewai/memory/entity/entity_memory.py

@@ -0,0 +1,22 @@
+from crewai.memory.entity.entity_memory_item import EntityMemoryItem
+from crewai.memory.memory import Memory
+from crewai.memory.storage.rag_storage import RAGStorage
+
+
+class EntityMemory(Memory):
+    """
+    EntityMemory class for managing structured information about entities
+    and their relationships using SQLite storage.
+    Inherits from the Memory class.
+    """
+
+    def __init__(self, embedder_config=None):
+        storage = RAGStorage(
+            type="entities", allow_reset=False, embedder_config=embedder_config
+        )
+        super().__init__(storage)
+
+    def save(self, item: EntityMemoryItem) -> None:
+        """Saves an entity item into the SQLite storage."""
+        data = f"{item.name}({item.type}): {item.description}"
+        super().save(data, item.metadata)