Feature: Allow for user defined protobufs

[gilbert-sci]

Summary

Updates the API to include support for user defined configuration parameters. Also fixes the device info display.

We need to do this because to send the server the device configuration with an Any type that is user defined, we need to point the python client to the correct location of the python descriptors.

Testing

# Load a manifest.json
python3 synapse/cli/__main__.py -u "device" start ../synapse-example-app/manifest.json

# Old device configuration also works
python3 synapse/cli/__main__.py -u "device" start ../synapse-example-app/config/device.json

[gilbert-sci]

Bump on this