`load-state` helper script ignores all responses from server

[Araneidae]

At the moment the python/load-state script completely ignores the content of what it is sending and all responses, which means that any problems with the transfer are silently ignored.

Instead, the script should track all lines sent and all responses and tie error responses to input lines.

[coretl]

https://github.com/PandABlocks/PandABlocks-client has a cli that does that:

$ pandablocks load --help
Usage: pandablocks load [OPTIONS] HOST [INFILE]

  Load a blocks configuration into HOST using the commands in INFILE

Options:
  --tutorial  load the tutorial settings
  --help      Show this message and exit.

https://github.com/PandABlocks/PandABlocks-client/blob/4e7a1efa9f9de833416366fab3a57362a806854d/pandablocks/commands.py#L480

[Araneidae]

Hmm. Oh well. I might fix this some time, just for a simple low dependency tool, but this definitely makes this a low priority issue!