Add ElectronNET.Build project (dll with custom MSBuild tasks)

src/ElectronNET.Build/ElectronNET.Build.csproj

@@ -0,0 +1,35 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <Import Project="..\common.props" />
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Build.Utilities.Core" Version="17.3.2" />
+  </ItemGroup>
+
+
+    
+  <PropertyGroup>
+
+    <_DllTargetPath>$(MSBuildThisFileDirectory)\..\ElectronNET\build</_DllTargetPath>
+
+  </PropertyGroup>
+
+  <Target BeforeTargets="AfterBuild" Name="CopyToBuildFolder">
+
+    <ItemGroup>
+      <OutputFiles Include="$(OutDir)**\*.dll"></OutputFiles>
+    </ItemGroup>
+
+    <Message Text="Copy ElectronNET.Build.dll to destination: $(_DllTargetPath)" Importance="high"/>
+
+    <Copy SourceFiles="@(OutputFiles)" 
+          DestinationFolder="$(_DllTargetPath)\%(RecursiveDir)" 
+          OverwriteReadOnlyFiles="true"></Copy>
+
+  </Target>
+
+</Project>