Add MIDI functionalities on Android platform

[lollo289]

Describe the project you are working on
I'm developing a game that uses midi functionalities and would like to export it as an Android app

Describe the problem or limitation you are having in your project
At the moment Midi methods of the godot engine are not supported on Android.

Describe the feature / enhancement and how it helps to overcome the problem or limitation

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

If this enhancement will not be used often, can it be worked around with a few lines of script?
I'm very far from being an experienced developer, so i don't know the difficulties related to this implementation, just wanting to know if it is possible at all or if is possible to find a workaround, maybe with a tailored plug-in.

Is there a reason why this should be core and not an add-on in the asset library?