clang-tidy: Apply modernize-loop-convert everywhere (#6481)

Co-authored-by: allejok96 <allejok96@gmail.com>
Co-authored-by: Dominic Clark <mrdomclark@gmail.com>

include/Piano.h

@@ -82,7 +82,7 @@ private:
 
 	InstrumentTrack* m_instrumentTrack;
 	MidiEventProcessor* m_midiEvProc;
-	bool m_pressedKeys[NumKeys];
+	std::array<bool, NumKeys> m_pressedKeys = {};
 
 } ;