Communicate module

[MarcusZuber]

Re-done communication.

I (@MarcusZuber) will add some test cases that are close to the real-life usage in concert soon.

Todo

• [ ] remove cine changing from trigger. Maybe property to which cine we record and from which cine we read would be the best. The trigger should only start the acquisition.
• [ ] num frames recorded is always 0. This is required to synchronize the experiments. (I need to know then all frames are in the camera and only the readout is running.)
• [ ] Reading xnetcard from an environment variable (but changeable via the property) would help to keep the low level configuration a bit hidden.
• [ ] trigger behavior in the different acquisition modes need to be checked. (I will come up with some tests to check this)

[MarcusZuber]

A new PR for this will be opened by @gabs1234 (so I can be reviewer).