Extended map support

[htotoo]

Description of the feature you're suggesting.

Would be great if we could provide more map files.
Default would remain the world map, but we could add more maps. Not world but region maps.
This way, we could download a more detailed map, for example a country.
Or to go further a city map too.
We could create a txt file for each additional map, that describes the top left coordinate, and the bottom right one. If the currently shown map part is within that region, the widget could show data from this file.
Ordering the priority of maps could be 'if the view is in the region for multiple maps, choose the smallest one (less width of the map is the more priority)'

Anything else?

No response