This reddit covers what we are trying to achieve, however a native, user friendly way of doing this would be preferable.
So for example, on each steam game listed to launch via proton, add a button/text that says something like "Run utility for this game" or something similar to how POL does it, so that you can say install/run a mod manager and it can find the game files and any registry entries in need of patching/modding.
https://www.reddit.com/r/Steam/comments/99fjzw/steam_proton_for_non_steam_applications/
This reddit covers what we are trying to achieve, however a native, user friendly way of doing this would be preferable.
So for example, on each steam game listed to launch via proton, add a button/text that says something like "Run utility for this game" or something similar to how POL does it, so that you can say install/run a mod manager and it can find the game files and any registry entries in need of patching/modding.