Add support for motion controllers via the CemuHook controller input protocol.

This is done by:
1) Implementing said protocol in a new controller input class CemuHookUDPServer.
2) Adding functionality in the WiimoteEmu class for pushing that motion input to the emulated Wiimote and MotionPlus.
3) Suitably modifying the UI for configuring an Emulated Wii Remote.

Source/Core/InputCommon/ControllerInterface/ControllerInterface.cpp

@@ -30,6 +30,9 @@
 #ifdef CIFACE_USE_PIPES
 #include "InputCommon/ControllerInterface/Pipes/Pipes.h"
 #endif
+#ifdef CIFACE_USE_CEMUHOOKUDPSERVER
+#include "InputCommon/ControllerInterface/CemuHookUDPServer/CemuHookUDPServer.h"
+#endif
 
 ControllerInterface g_controller_interface;
 
@@ -67,6 +70,9 @@ void ControllerInterface::Initialize(const WindowSystemInfo& wsi)
 #endif
 #ifdef CIFACE_USE_PIPES
 // nothing needed
+#endif
+#ifdef CIFACE_USE_CEMUHOOKUDPSERVER
+  ciface::CemuHookUDPServer::Init();
 #endif
 
   RefreshDevices();
@@ -122,6 +128,9 @@ void ControllerInterface::RefreshDevices()
 #ifdef CIFACE_USE_PIPES
   ciface::Pipes::PopulateDevices();
 #endif
+#ifdef CIFACE_USE_CEMUHOOKUDPSERVER
+  ciface::CemuHookUDPServer::PopulateDevices();
+#endif
 
   m_is_populating_devices = false;
   InvokeDevicesChangedCallbacks();
@@ -172,6 +181,9 @@ void ControllerInterface::Shutdown()
 #ifdef CIFACE_USE_EVDEV
   ciface::evdev::Shutdown();
 #endif
+#ifdef CIFACE_USE_CEMUHOOKUDPSERVER
+  ciface::CemuHookUDPServer::DeInit();
+#endif
 }
 
 void ControllerInterface::AddDevice(std::shared_ptr<ciface::Core::Device> device)