Garmin bitmap IMG maps

Support Garmin's great bitmap IMG maps.

New Garmin devices support those maps but they all have a poor display resolution. Current mobiles have four times higher resolution than that, providing much better experience when orientating in the map.

It would be great Locus could support those bitmap ISO maps as well.

Garmin is good and sturdy in terrain and bad weather, but their displays are poor. Using both would make the it better.