Initial VST3 Support (disabled)

Disabled until Steinberg licensing compliance  can be sorted out.

src/SplitEffect.cpp

@@ -20,7 +20,7 @@
 #include "pch.h"
 #include "SplitEffect.hpp"
 
-#include "Lv2Host.hpp"
+#include "PiPedalHost.hpp"
 #include "PedalBoard.hpp"
 
 using namespace pipedal;