added pcdu with trait implementation of power switcher

pyclient/main.py

@@ -218,7 +218,7 @@ def make_target_id(target_id: int) -> bytes:
     byte_string = bytearray(struct.pack("!I", target_id))
     return byte_string
 
-def read_addressable_id(data: bytes) -> Tuple[int, int]:
+def read_addressable_id(data: bytes) -> tuple[int, int]:
     target_id = struct.unpack("!I", data[0:4])[0]
     set_id = struct.unpack("!I", data[4:8])[0]
     return (target_id, set_id)