Display progress when Run Installer First is clicked in the Add Game dialog

[arielj]

Problem description

Currently, licking the Run Installer First creates a prefix and runs an exe inside it, but it's all done silently and there's no feedback until the executable shows something.

If something fails, for any reason, there's no way of knowing that for the user.

Feature description

Once the user clicks the Run Installer First and picks an executable, we could display a progress dialog with details of what's happening and then once the installer ends it can show a done button or something, so users can see any output the command had or if there's any wine information when creating the prefix.

Alternatives

I guess a simpler alternative is to lock all other fields and buttons until the executable ends, it's some feedback but won't give details if something fails.

Additional information

No response