[Fix] Check for game updates before launch

[flavioislima]

This fixes the issue we are having now where it is not possible to skip an update when launching a game.
I changed the logic to check the update on frontend and show the message before even launching the game instead of waiting for an error from Legendary.

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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)