reimplement Q_DISABLE_COPY_MOVE for full compatibility with versions < 5.13

I was under the impression Q_DISABLE_COPY_MOVE was a much older function than
it is. Since we historically target 5.6 and these functions are small
convenience functions, I just implemented them in the actual codebase.

app/decoder/waveinput.h

@@ -3,6 +3,7 @@
 
 #include <QFile>
 
+#include "common/constructors.h"
 #include "render/audioparams.h"
 
 class WaveInput
@@ -12,7 +13,7 @@ public:
 
   ~WaveInput();
 
-  Q_DISABLE_COPY_MOVE(WaveInput)
+  DISABLE_COPY_MOVE(WaveInput)
 
   bool open();