Support random check out different snapshot

tjnetwork_new.py

@@ -46,6 +46,12 @@ def undo(name: str) -> None:
 def redo(name: str) -> None:
     return api.redo(name)
 
+def take_snapshot(name: str, tag: str) -> None:
+    return api.take_snapshot(name, tag)
+
+def pick_snapshot(name: str, tag: str) -> None:
+    return api.pick_snapshot(name, tag)
+
 
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 # type