Hotfix for a collection installer issue and a cleanup of Witcher 3 game support.
- collections: Fixed installer options of mods with changed FOMOD structures not publishing correctly. (#15703)
- collections: Added status pill to collection overview
- witcher3: Added Epic Game Store discovery. (#15362)
- witcher3: Version information now displaying correctly
- witcher3: Migrated load ordering system to use new FBLO API. (#15362)