[FEATURE] Always up to date version of a runner

[rokam]

Describe the solution you'd like
Be able to have a runner's path that contains the latest version there. Something like Proton Experimental on Steam.
That way, the game that uses that runner will always use the up-to-date version.

Also, this will require a background process to keep it up to date.

Explanation
Download ProtonGE Updated, this will add the most recent version to ~/.steam/steam/compatibilitytools.d/ProtonGE\ Updated/.

And ProtonGE Updated should appear in the combobox:

[Vysp3r]

Yeah that should be do-able. I'll need to learn how to make a background process and how to start an application when the computer opens for that.

One problem that I may face is let's say there's a new version available, but you're currently playing a game on Steam. How am I supposed to know you're playing? I could ask you for your Steam username and use the steam API to check if you're playing, but what if you put yourself in offline mode. Do you have any idea on how to fix that problem?

[rokam]

What about just check process running?
When running proton-ge I do get this:

$ ps -aux
python3 /usr/share/steam/compatibilitytools.d/proton-ge-custom/proton waitforexitandrun /jogos/SteamLibrary/steamapps/common/Fall Guys/FallGuys_client.exe

[Vysp3r]

Oh yeah you're right. There's nothing stopping me now. It might take some time since I need to learn new things.

[RouHim]

An alternative implementation could be that it can be updated via the command line. Something like "protonplus update all" or "protonplus update proton wine"
This would also allow integration into programs like topgrade.

[Vysp3r]

I still have some fixing to do for the next release (v0.4.7), but once I am done with it I was planning on working on this request along side #148. After that I don't mind adding command lines for different stuff.