Update Makefiles to match the new plugin build procedure

ZynAddSubFX now use DPF's CMake module for plugin build, which brings
the following changes:
- New plugin formats: VST3, CLAP
- LV2 build for Windows (DAWs like REAPER and Ardour support LV2 there)
- Plugin will be installed to different directories

This patch mainly updates recipe `copy_zest_files`.

Makefile.linux.mk

@@ -87,9 +87,11 @@ copy_zest_files: preinstall_zynaddsubfx
 	touch  $(ZYN_FUSION_OUT)/qml/MainWindow.qml
 
 	cp   -a $(ZEST_PATH)/package/schema	   $(ZYN_FUSION_OUT)/
-	mkdir   $(ZYN_FUSION_OUT)/ZynAddSubFX.lv2
-	cp	  $(ZYNADDSUBFX_BUILD_DIR)/src/Plugin/ZynAddSubFX/lv2/* $(ZYN_FUSION_OUT)/ZynAddSubFX.lv2/
-	cp	  $(ZYNADDSUBFX_BUILD_DIR)/src/Plugin/ZynAddSubFX/vst/ZynAddSubFX.so $(ZYN_FUSION_OUT)/
+	cp	 -r $(ZYNADDSUBFX_INSTALL_DIR)/usr/lib/lv2/ZynAddSubFX.lv2 $(ZYN_FUSION_OUT)/ZynAddSubFX.lv2/
+	cp	 -r $(ZYNADDSUBFX_INSTALL_DIR)/usr/lib/vst3/ZynAddSubFX.vst3 $(ZYN_FUSION_OUT)/ZynAddSubFX.vst3/
+	cp	  $(ZYNADDSUBFX_INSTALL_DIR)/usr/lib/vst/ZynAddSubFX-vst2.so $(ZYN_FUSION_OUT)/
+	cp	  $(ZYNADDSUBFX_INSTALL_DIR)/usr/lib/clap/ZynAddSubFX.clap $(ZYN_FUSION_OUT)/
+
 	cp	  $(ZYNADDSUBFX_BUILD_DIR)/src/zynaddsubfx $(ZYN_FUSION_OUT)/
 	cp	  $(ZEST_PATH)/install-linux.sh $(ZYN_FUSION_OUT)/
 	cp	  $(ZEST_PATH)/package-README.txt $(ZYN_FUSION_OUT)/README.txt

Makefile.mingw64.mk

@@ -154,8 +154,11 @@ copy_zest_files:
 	cp $(shell find $(ZEST_PATH)/deps/nanovg -type f | grep ttf$$) $(ZYN_FUSION_OUT)/font/
 	cp $(ZEST_PATH)/src/osc-bridge/schema/test.json $(ZYN_FUSION_OUT)/schema/
 
-	cp $(ZYNADDSUBFX_BUILD_DIR)/src/Plugin/ZynAddSubFX/vst/ZynAddSubFX.dll $(ZYN_FUSION_OUT)/
-	cp $(ZYNADDSUBFX_BUILD_DIR)/src/zynaddsubfx.exe $(ZYN_FUSION_OUT)/
+	cp	 -r $(ZYNADDSUBFX_BUILD_DIR)/build/bin/ZynAddSubFX.lv2 $(ZYN_FUSION_OUT)/ZynAddSubFX.lv2/
+	cp	 -r $(ZYNADDSUBFX_BUILD_DIR)/build/bin/ZynAddSubFX.vst3 $(ZYN_FUSION_OUT)/ZynAddSubFX.vst3/
+	cp	$(ZYNADDSUBFX_BUILD_DIR)/build/bin/ZynAddSubFX-vst2.dll $(ZYN_FUSION_OUT)/
+	cp	$(ZYNADDSUBFX_BUILD_DIR)/build/bin/ZynAddSubFX.clap $(ZYN_FUSION_OUT)/
+	cp	$(ZYNADDSUBFX_BUILD_DIR)/src/zynaddsubfx.exe $(ZYN_FUSION_OUT)/
 
 	cp $(PREFIX_PATH)/bin/libportaudio-2.dll $(ZYN_FUSION_OUT)/
 	cp $(PREFIX_PATH)/bin/libwinpthread-1.dll $(ZYN_FUSION_OUT)/

Makefile.windows.mk

@@ -165,7 +165,10 @@ copy_zest_files:
 	cp $(shell find $(ZEST_PATH)/deps/nanovg -type f | grep ttf$$) $(ZYN_FUSION_OUT)/font/
 	cp $(ZEST_PATH)/src/osc-bridge/schema/test.json $(ZYN_FUSION_OUT)/schema/
 
-	cp $(ZYNADDSUBFX_BUILD_DIR)/src/Plugin/ZynAddSubFX/vst/ZynAddSubFX.dll $(ZYN_FUSION_OUT)/
+	cp	 -r $(ZYNADDSUBFX_BUILD_DIR)/build/bin/ZynAddSubFX.lv2 $(ZYN_FUSION_OUT)/ZynAddSubFX.lv2/
+	cp	 -r $(ZYNADDSUBFX_BUILD_DIR)/build/bin/ZynAddSubFX.vst3 $(ZYN_FUSION_OUT)/ZynAddSubFX.vst3/
+	cp	$(ZYNADDSUBFX_BUILD_DIR)/build/bin/ZynAddSubFX-vst2.dll $(ZYN_FUSION_OUT)/
+	cp	$(ZYNADDSUBFX_BUILD_DIR)/build/bin/ZynAddSubFX.clap $(ZYN_FUSION_OUT)/
 	cp $(ZYNADDSUBFX_BUILD_DIR)/src/zynaddsubfx.exe $(ZYN_FUSION_OUT)/
 
 	cp $(PREFIX_PATH)/bin/libportaudio-2.dll $(ZYN_FUSION_OUT)/