fix: add missing Cars.cpp/h to vcxproj (pre-existing build error)

Author: privaloops

Dinput8Wrapper.vcxproj

@@ -27,6 +27,7 @@
     <ClInclude Include="Game Files\AliensExtermination.h" />
     <ClInclude Include="Game Files\ArcticThunder.h" />
     <ClInclude Include="Game Files\Batman.h" />
+    <ClInclude Include="Game Files\Cars.h" />
     <ClInclude Include="Game Files\CrazyTaxi.h" />
     <ClInclude Include="Game Files\CruisnBlast.h" />
     <ClInclude Include="Game Files\D1GP.h" />
@@ -97,6 +98,7 @@
     <ClCompile Include="Game Files\AliensExtermination.cpp" />
     <ClCompile Include="Game Files\ArcticThunder.cpp" />
     <ClCompile Include="Game Files\Batman.cpp" />
+    <ClCompile Include="Game Files\Cars.cpp" />
     <ClCompile Include="Game Files\CrazyTaxi.cpp" />
     <ClCompile Include="Game Files\CruisnBlast.cpp" />
     <ClCompile Include="Game Files\D1GP.cpp" />