Comment by gassi
I've been working on integrating RomM into Lutris (https://lutris.net/) for a while, but it's not ready yet since I haven't had time to finish it. Not as a plugin but directly in the main Lutris repo: https://github.com/gantoine/lutris/tree/romm-game-service
It would allow you to store your games on the server, sync the list in Lutris, and install them when you want to play them. I'd like to get a working POC to demo to the Lutris team soon-ish. Oh and if anyone sees this and would like to help get us there, contributions are always welcome!
I would love to see this working in Pegasus Frontend or Heroic Games Launcher, personally