To get this working, first install the UE project for HL.
Once you have this installed, just copy and paste the Content directory from this repository to your UE project.
You will need to assign a unique chunk id to the Content/HogWarp/Example asset, see this tutorial.
Once you have packaged the project, rename the files associated with the chunk id you picked to Example so you have Example.ucas, Example.utoc, Example.pak, and move these files in the Mods folder in your HogWarp install.