Include missing build files in VS project file

Author: lukasf

Source/FFmpegInteropX.vcxproj

@@ -322,6 +322,7 @@
     <None Include="..\Build\InstallTools.ps1" />
     <None Include="..\Build\Repack-NuGet.ps1" />
     <None Include="..\Build\Start-DevShell.ps1" />
+    <None Include="..\Directory.Build.props" />
     <None Include="..\LICENSE" />
     <None Include="..\README-BUILD.md" />
     <None Include="..\README.md" />

Source/FFmpegInteropX.vcxproj.filters

@@ -100,6 +100,12 @@
     <None Include="..\Build-OverallPackage.ps1">
       <Filter>Build</Filter>
     </None>
+    <None Include="..\Directory.Build.props">
+      <Filter>Build</Filter>
+    </None>
+    <None Include="..\Build-VideoEffects.ps1">
+      <Filter>Build</Filter>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="CodecChecker.h" />