While this post is dated, it is still relevant as I too was wondering if there was a way to get HomeLink into my 2019 e-Golf.
To aide those arriving after me, here's a video on "rotaryguy" YouTube channel. He walks you through the install of the VW Interior Mirror with HomeLink in an '17 Golf R Mk7 with DAP.
VW Part Number = 000.072.548f
For more detailed information and other tips that are missing from the first video, here's a video from 'Sean's Trains, Cars and Other Stuff' channel.