Show an error if the select wine doesn't exist

[arielj]

This PR adds an error dialog when a user tries to do an action that requires Wine but the binary doesn't exist.

This is really common when deleting wine versions without updating the wine version of the game for example, and trying to run the game/winetricks/winecfg/exe on prefix were failing silently in the frontend or confusingly (winetricks dialog stuck doing nothing).

This would address #1906 and also show more info for the user to quickly address the problem without having to check the logs.

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Use the following Checklist if you have changed something on the Backend or Frontend:

• Tested the feature and it's working on a current and clean install.
• Tested the main App features and they are still working on a current and clean install. (Login, Install, Play, Uninstall, Move games, etc.)
• Created / Updated Tests (If necessary)
• Created / Updated documentation (If necessary)