Bug#982147: mgba: Please provide a libmgba-dev package

[Ryan Tandy]

On Mon, Feb 08, 2021 at 01:59:46AM +0100, Celelibi wrote:
>I opened a github issue asking for an official stance.
>https://github.com/mgba-emu/mgba/issues/2042

Great - I'm happy to go ahead with this based on endrift's response 
there. Thank you for driving this!

I'm afraid it's too late to have this for Debian 11 (bullseye), but I 
can work on the changes in a git branch during the freeze.

Ryan