message: Add RDSplitter to visual studio project
diff: <ClCompile Include="$(IntDir)generated\moc_PipelineFlowChart.cpp" />
  <ClCompile Include="$(IntDir)generated\moc_RangeHistogram.cpp" />
  <ClCompile Include="$(IntDir)generated\moc_RDDoubleSpinBox.cpp" />
  + <ClCompile Include="$(IntDir)generated\moc_RDSplitter.cpp" />
  <ClCompile Include="$(IntDir)generated\moc_RDLabel.cpp" />
  <ClCompile Include="$(IntDir)generated\moc_RDLineEdit.cpp" />
  <ClCompile Include="$(IntDir)generated\moc_MainWindow.cpp" />
  <ClCompile Include="Widgets\PipelineFlowChart.cpp" />
  <ClCompile Include="Widgets\RangeHistogram.cpp" />
  <ClCompile Include="Widgets\Extended\RDDoubleSpinBox.cpp" />
  + <ClCompile Include="Widgets\Extended\RDSplitter.cpp" />
  <ClCompile Include="Widgets\Extended\RDLabel.cpp" />
  <ClCompile Include="Widgets\Extended\RDListView.cpp" />
  <ClCompile Include="Widgets\ResourcePreview.cpp" />
  <Message>MOC %(Filename).h</Message>
  <Outputs>$(IntDir)generated\moc_%(Filename).cpp</Outputs>
  </CustomBuild>
  + <CustomBuild Include="Widgets\Extended\RDSplitter.h">
  + <AdditionalInputs>%(Fullpath);$(ProjectDir)3rdparty\qt\$(Platform)\bin\moc.exe;%(AdditionalInputs)</AdditionalInputs>
  + <Command>$(ProjectDir)3rdparty\qt\$(Platform)\bin\moc.exe -DUNICODE -DWIN32 -DWIN64 -D_WIN32 -D_WIN64 -DRENDERDOC_PLATFORM_WIN32 -DSCINTILLA_QT=1 -DSCI_LEXER=1 -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -D_MSC_VER=1900 -I$(ProjectDir) -I$(SolutionDir)\renderdoc\api\replay -I$(ProjectDir)3rdparty\qt\$(Platform)\mkspecs/win32-msvc2015 -I$(ProjectDir)3rdparty\qt\$(Platform)\include -I$(ProjectDir)3rdparty\qt\$(Platform)\include\QtWidgets -I$(ProjectDir)3rdparty\qt\$(Platform)\include\QtGui -I$(ProjectDir)3rdparty\qt\$(Platform)\include\QtCore %(Fullpath) -o $(IntDir)generated\moc_%(Filename).cpp</Command>
  + <Message>MOC %(Filename).h</Message>
  + <Outputs>$(IntDir)generated\moc_%(Filename).cpp</Outputs>
  + </CustomBuild>
  <CustomBuild Include="Widgets\Extended\RDLabel.h">
  <AdditionalInputs>%(Fullpath);$(ProjectDir)3rdparty\qt\$(Platform)\bin\moc.exe;%(AdditionalInputs)</AdditionalInputs>
  <Command>$(ProjectDir)3rdparty\qt\$(Platform)\bin\moc.exe -DUNICODE -DWIN32 -DWIN64 -D_WIN32 -D_WIN64 -DRENDERDOC_PLATFORM_WIN32 -DSCINTILLA_QT=1 -DSCI_LEXER=1 -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -D_MSC_VER=1900 -I$(ProjectDir) -I$(SolutionDir)\renderdoc\api\replay -I$(ProjectDir)3rdparty\qt\$(Platform)\mkspecs/win32-msvc2015 -I$(ProjectDir)3rdparty\qt\$(Platform)\include -I$(ProjectDir)3rdparty\qt\$(Platform)\include\QtWidgets -I$(ProjectDir)3rdparty\qt\$(Platform)\include\QtGui -I$(ProjectDir)3rdparty\qt\$(Platform)\include\QtCore %(Fullpath) -o $(IntDir)generated\moc_%(Filename).cpp</Command>
  