All I did was run the two executables on the git hub, then Droidcam appears in the OBS tools menu. If you run it, there is a virtual webcam with the names "DroidCam Video" and "Microphone (DroidCam Audio)"
I run a script which I have coped above. You can't use DATV Easy as it seems to have the source names wired in, but it will only be a matter of changing those and re-compiling so the developer won't have too much to do. The only difference is it is necessary to set the resolution and audio rate required or Driodcam won't know what to send it and will default to probably 640x480. This is what the command segment above does. It requests 1280x720 video and 48kHz audio.