Use game controller APIs instead of the joystick ones to be able to use
the gamepad button DB file.

Properly add SDL mocks for macOS.

Use library in new subproject.

Correctly include portmidi in tests.

Add mocks for some SDL functions related to joysticks/gamepads.

Remove old portmidi dependency.

Remove old SDL dependency.

Put minIni, and bdd-for-c dependencies to subprojects dir.