Add MIDI GUI tab and learn function #5587

Job	Run time
Build vars & Github release (if required)	21s
Build for Linux .deb arm64 (artifacts)	3m 33s
Build for MacOS Legacy (artifacts+CodeQL)	32m 30s
Build for iOS (artifacts)	4m 45s
Build for Android .apk (artifact+codeQL)	35m 15s
Build for Linux .deb armhf (artifacts)	4m 3s
Build for MacOS (artifacts)	7m 36s
Build for Windows (artifact+codeQL)	24m 7s
Build for Linux .deb amd64 (artifacts+codeQL)	7m 50s
Build for Windows JACK (artifact)	6m 53s
Create files for .deb repository (if requested)	0s
	2h 6m 53s

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