CSCP Command Timeout

We should discuss CSCP command timeouts in general.

• @hanno.perrey reported issues with their 1s hard-coded timeout in Python when operating ~20 satellites, reason still unclear
• @hwennlof reported issues with the timeout when implementing user commands which take longer
• Also in the C++ implementation we only return after the user command has finished - and I don't see an alternative, because there might be some payload in the response that needs to be returned by the command first.