Feat：memory sdk (#12538)

### What problem does this PR solve?

Move memory and message apis to /api, and add sdk support.

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

sdk/python/ragflow_sdk/modules/memory.py

@@ -0,0 +1,95 @@
+#
+#  Copyright 2025 The InfiniFlow Authors. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+
+from .base import Base
+
+
+class Memory(Base):
+
+    def __init__(self, rag, res_dict):
+        self.id = ""
+        self.name = ""
+        self.avatar = None
+        self.tenant_id = None
+        self.owner_name = ""
+        self.memory_type = ["raw"]
+        self.storage_type = "table"
+        self.embd_id = ""
+        self.llm_id = ""
+        self.permissions = "me"
+        self.description = ""
+        self.memory_size = 5 * 1024 * 1024
+        self.forgetting_policy = "FIFO"
+        self.temperature = 0.5,
+        self.system_prompt = ""
+        self.user_prompt = ""
+        for k in list(res_dict.keys()):
+            if k not in self.__dict__:
+                res_dict.pop(k)
+        super().__init__(rag, res_dict)
+
+    def update(self, update_dict: dict):
+        res = self.put(f"/memories/{self.id}", update_dict)
+        res = res.json()
+        if res.get("code") != 0:
+            raise Exception(res["message"])
+        self._update_from_dict(self.rag, res.get("data", {}))
+        return self
+
+    def get_config(self):
+        res = self.get(f"/memories/{self.id}/config")
+        res = res.json()
+        if res.get("code") != 0:
+            raise Exception(res["message"])
+        self._update_from_dict(self.rag, res.get("data", {}))
+        return self
+
+    def list_memory_messages(self, agent_id: str | list[str]=None, keywords: str=None, page: int=1, page_size: int=50):
+        params = {
+            "agent_id": agent_id,
+            "keywords": keywords,
+            "page": page,
+            "page_size": page_size
+        }
+        res = self.get(f"/memories/{self.id}", params)
+        res = res.json()
+        if res.get("code") != 0:
+            raise Exception(res["message"])
+        return res["data"]
+
+    def forget_message(self, message_id: int):
+        res = self.rm(f"/messages/{self.id}:{message_id}", {})
+        res = res.json()
+        if res.get("code") != 0:
+            raise Exception(res["message"])
+        return True
+
+    def update_message_status(self, message_id: int, status: bool):
+        update_message = {
+            "status": status
+        }
+        res = self.put(f"/messages/{self.id}:{message_id}", update_message)
+        res = res.json()
+        if res.get("code") != 0:
+            raise Exception(res["message"])
+        return True
+
+    def get_message_content(self, message_id: int) -> dict:
+        res = self.get(f"/messages/{self.id}:{message_id}/content")
+        res = res.json()
+        if res.get("code") != 0:
+            raise Exception(res["message"])
+        return res["data"]