Round Map Frames

[toihr]

Feature description

I would appreciate a way to make round map frames, including grids.

Additional context

This would be specifically usefull for us who work on the Martian South and North Poler or generally most Planetary Scientists working on Polar Science.

An example of what i would like to be able to make.

[agiudiceandrea]

For a workaround, see https://anitagraser.com/2016/05/01/how-to-create-round-maps-in-print-composer/.