complete pkg_system basic design and impl

src/component/ndn_client/ndn_client.py

@@ -0,0 +1,13 @@
+
+from .cid import content_id 
+
+class ndn_get_task:
+    def __init__(self) -> None:
+        pass
+
+class ndn_client:
+    def __init__(self):
+        pass
+
+    def get_file(cid:content_id,target_path:str,urls:{}=None,options:{}=None):
+        pass