PC storefront tracking#509

I’d like to suggest adding an optional storefront field when PC or Steam Deck is selected as the platform for a game. This field would allow users to specify which store the game was purchased from.

Functionally, this data should be surfaced elsewhere in the app. For example, when sorting or viewing a list by platform, entries could display as “PC – Steam”, “PC – Epic”, etc. This would make it much easier to see not just what games you own, but where you own them.

I see this as separate from automatic library syncing. Even without syncing, manually tracking storefronts would be extremely useful for managing access across multiple launchers and devices.

At minimum, I’d suggest supporting the most common storefronts:
• Steam
• Epic Games Store
• GOG
• EA App
• Amazon Games
• Xbox App

This would be ideal for users who own games across multiple PC ecosystems and want a simple way to keep everything organized.