ProtonPlus, a graphical utility to manage “compatibility tools”, has been released in version v0.4.31. Supported launchers:

• Steam
• Lutris
• Heroic Games Launcher
• Bottles Supported compatibility tools:
• Steam Tinker Launch
• Proton-GE
• Luxtorpeda
• Boxtron
• Roberta
• NorthstarProton
• Proton-GE RTSP
• DXVK
• VKD3D-Lutris … and a lot more. The main installation method is via Flatpak.