Add data panel to map view

[snooky234]

Hi mracko!

first of all, thanks for this great app! I personally missed some information on the map view that I would like to keep track of during the flight. My main use case is to monitor my flight remotely on the local network over my phone with the following information:

• Speeds: airspeed/truespeed
• Altitude (vspeed)
• Distance to destination in flightplan
• Fuel in % (L/R)
• Simrate
• Estimated time enroute (simulation time / true time with faktor simrate)

I also added a button at the bottom to toggle the new info panel.

I had to shorten the texts of the other buttons to ensure that everything remains accessible on mobile devices:

I tested and iterated the new feature several times and find it very helpful now. If like it you can add it to your repo.

Looking forward to your feedback!