I can’t include substance on my fork as I’m not allowed to distribute source code from marketplace (substance plugin). You can get the plugin youself from the marketplace and place it into your own projects Plugins folder. Then generate your game’s project files again and UE4 will compile substance plugin along with your project.
Worth mentioning that you need to have c++ project for , so if your project is currently blueprint only, you need to do is place the substance plugin as I mentioned and then generate any dummy c++ file with UE4 editor to get the c++ solution file.