Prepare SPU and IO Ports related code

src/Library/src/BootLoader/start.cpp

@@ -1,7 +1,11 @@
+#include <PSX/SPU/SPU_Ports.hpp>
 #include <stdio.h>
 
 namespace JabyEngine {
     void start() {
-       printf("Hello Planschbecken\n");       
+        SPU::SweepVolume b;
+
+        b.set_volume(9);
+        printf("Hello Planschbecken\n");       
     }
 }