copy VisualFSharpTemplate.vsix to the insertion directory (#3767)

Author: brettfo

setup/fsharp-setup-build.proj

@@ -50,6 +50,7 @@
 
         <ItemGroup>
             <InsertionItems Include="$(VsixBuildLocation)\VisualFSharpFull.vsix" />
+            <InsertionItems Include="$(VsixBuildLocation)\VisualFSharpTemplate.vsix" />
             <InsertionItems Include="$(VsixBuildLocation)\Microsoft.FSharp.VSIX.Full.Core.json" />
             <InsertionItems Include="$(VsixBuildLocation)\Microsoft.FSharp.VSIX.Templates.json" />
         </ItemGroup>