Add a debug PS2 VM to the runtime (#401)

* update VS launch target params

* remove redundant VS launch option

* Add a debug PS2 VM to the runtime, currently only for the DMAC

* Formatting

* remove broken assert

* Avoid weird buffer overflow bug

* Test on `VIF0_DMA_BANK`!

* Add a docstring

* patch pointers for the other dma channels

* patch DMAC pointer

* remove dead leftover code

* Change default return value for `get_vm_ptr`

game/kernel/kmachine.cpp

@@ -29,6 +29,8 @@
 #include "game/sce/libpad.h"
 #include "common/symbols.h"
 #include "common/log/log.h"
+
+#include "game/system/vm/vm.h"
 using namespace ee;
 
 /*!
@@ -369,6 +371,12 @@ int ShutdownMachine() {
   CloseListener();
   ShutdownSound();
   ShutdownGoalProto();
+
+  // OpenGOAL only - kill ps2 VM
+  if (VM::use) {
+    VM::vm_kill();
+  }
+
   Msg(6, "kernel: machine shutdown\n");
   return 0;
 }