JitInterface: Convert includes into forward declarations where applicable

Source/Core/Core/PowerPC/PPCTables.cpp

@@ -8,10 +8,13 @@
 #include <array>
 #include <cinttypes>
 #include <cstddef>
+#include <cstdio>
 #include <vector>
 
+#include "Common/Assert.h"
 #include "Common/CommonTypes.h"
 #include "Common/FileUtil.h"
+#include "Common/Logging/Log.h"
 #include "Common/StringUtil.h"
 
 #include "Core/PowerPC/Interpreter/Interpreter.h"