Emu: Add ProcessingUnit .cpp file

src/processingunit.cpp

@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) 2022 Riyyi
+ * Copyright (C) 2022 Th3FrankXD
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "processing-unit.h"
+
+ProcessingUnit::ProcessingUnit()
+{
+}
+
+ProcessingUnit::~ProcessingUnit()
+{
+}