Merge pull request #1 from numbpill3d/claude/greetings-pair-pr-011CV38DZYum8iJajqn8haNZ

Comprehensive improvements and finalization of Driftone Mini

Update touchscreen.h

Update touchscreen.cpp

Update driftone_main.cpp

Create driftone_main.cpp

Create sequencer.h

Create sequencer.cpp

Create ui.h

Create ui.cpp

Create audioengine.h

Create audioengine.cpp

Create sdloader.h

Create sdloader.cpp

Create touchscreen.h