Enhanced GoG-Steam support

[StormAtronach]

Is your feature request related to a problem? Please describe.

At the moment, how Wabbajack compiles from when having the same game from two storefronts is very opaque. In order to "force" Wabbajack to compile from GoG install, I need to uninstall from Steam.

Also, there's no check between the MO2 game instance and the one that Wabbajack is using to compile.

Describe the solution you'd like

1. A warning when there's a mismatch between the MO2 game instance (GoG/Steam) and the one that Wabbajack is compiling from
2. The possibility to choose which install to use when compiling

Describe alternatives you've considered

At present, I need to create two parallel MO2 instances and ensure only one storefront game is installed, which is a very time consuming task.

Additional context

(Waves hands trying to express frustration)

[github-actions]

Marked as stale due to no interactions in the last 90 days. If the issue still exists, please provide any possibly still needed information or excuse the devs for not getting around to addressing this issue yet. If this issue is still considered unsolved a dev will soon remove the stale tag from this issue.