`add_device` function doesn't seem to work

[Ilyin-Vladimir]

Hi

add_device function doesn't seem to work
https://github.com/annetutil/gnetcli/blob/main/grpc_sdk/python/gnetclisdk/client.py#L167

I have an error with any parameters being passed

grpc._common - ERROR - Exception serializing message!
Traceback (most recent call last):
  File "/home/vagrant/workspace/route_vision/etl/venv/lib/python3.12/site-packages/grpc/_common.py", line 89, in _transform
    return transformer(message)
           ^^^^^^^^^^^^^^^^^^^^
TypeError: descriptor 'SerializeToString' for 'google._upb._message.Message' objects doesn't apply to a 'google._upb._message.MessageMeta' object