New ArduPilot methodic configurator GUI

@Yuri_Rage @nostromo123 I now updated the install instructions on the file to use venv

Can you guys review my changes?

I added more used case documentation on how to use an existing configured vehicle parameter values instead of the template values:



@ amilcarlucas - an excellent tool to guide and streamline AP setup - I was wondering whether I could run the configurator also to check the AP settings on a rover - i.e. on functions and parameters that are common to copter and rover.