Possibility to shift signals in a "live view", to make it more practical to align different signals

[SevenOfNinePE]

Align two signals while shifting the time difference of the signals

• Find out how a +/- Buttons can be introduced to the matplotlib plot
• Connect +/- Button to one of the signals so shift it
• Show the actual value of the shifted time difference

Outcome:
Buttons or sliders are rather easy to add to matplotlib-plots.
A small example is available.
The next step is to add this in pySignalScope. Here the suitable approach is to find out.
Moreover if this works fine, the user should be able, to react on a button press or slider action in a customized way.
If no default callback is provided the shift of the plots are to do in a suitable way.