Refactor so parallel-rdp is in charge of polling inputs and not the EmuThread

external/parallel-rdp/ParallelRDPWrapper.cpp

@@ -2,6 +2,7 @@
 #include <ParallelRDPWrapper.hpp>
 #include <memory>
 #include <rdp_device.hpp>
+#include <core/mmio/VI.hpp>
 
 using namespace Vulkan;
 using namespace RDP;

external/parallel-rdp/ParallelRDPWrapper.hpp

@@ -1,8 +1,11 @@
 #pragma once
-#include <backend/Core.hpp>
 #include <rdp_device.hpp>
 #include <wsi.hpp>
-#include <SDL3/SDL.h>
+#include <common.hpp>
+
+namespace n64 {
+struct VI;
+}
 
 class ParallelRDP {
 public: