Update Jarvis implement

doc/storage.md

@@ -0,0 +1,16 @@
+# NDN Storage
+
+```python
+
+class NDNStorage:
+    async def get(self,data_name:str)->Dict:
+        #return object desc, include local cache path
+
+    async def set_file(self,local_path)->str:
+        # return data_name
+
+    async def read_content(self,data_name:str)->bytes:
+        # return bytes
+        # 这里不但会读取本地缓存，还会对内容进行验证
+
+```