Skydemon route files

[17721]

Can you add native support of Skydemon route files? It saves a route in 6 different file formats including GPX, but it uses a slightly different strings compared to the way your plugin creates a GPX. Also, Skydemon's *.flightplan file has the most proprietary data available.

https://drive.google.com/file/d/1l6nkQDsZbYSEaBa-XWhSkI1H_f2-tdgA/view?usp=sharing

Thanks!