Added integration test based on various board combinations.

[cmaglie]

This is a draft of integration tests to validate the implementation of the RPC library.

[eigen-value]

Hi @cmaglie thanks for the integration tests and documentation!
I have to ask 2 minor modifications before I merge:

• Please move the test folder under extras/go or extras/integration. I'll probably move python code under extras/python
• Please revert the changes to client.h . Debug prints will be removed after reaching a stable implementation of upcoming features

[cmaglie]

• Please move the test folder under extras/go or extras/integration. I'll probably move python code under extras/python

Done

• Please revert the changes to client.h . Debug prints will be removed after reaching a stable implementation of upcoming features

I'm using the debug prints to validate the tests and check that the sketch has the desired output.
Can we make them optional in some way?
Otherwise, I can keep this PR open and rebase on master from time to time.

[eigen-value]

• Please move the test folder under extras/go or extras/integration. I'll probably move python code under extras/python

Done

• Please revert the changes to client.h . Debug prints will be removed after reaching a stable implementation of upcoming features

I'm using the debug prints to validate the tests and check that the sketch has the desired output. Can we make them optional in some way? Otherwise, I can keep this PR open and rebase on master from time to time.

Let's keep the PR draft for the moment

[eigen-value]

Way to go @cmaglie ! Super handy test cases 👍