General: Normalize RuntimeCommon include paths

Performs the same normalizing done to the RuntimeCommonB target, now all
of the runtime headers have normalized include paths.

Runtime/MP1/CInGameGuiManagerCommon.hpp

@@ -1,7 +1,5 @@
 #pragma once
 
-#include "RetroTypes.hpp"
-
 namespace urde::MP1 {
 
 enum class EInGameGuiState { Zero, InGame, MapScreen, PauseGame, PauseLogBook, PauseSaveGame, PauseHUDMessage };