RareCore
refactor_backend
`LegendaryCore.get_non_asset_library_items()` returns the same tuple for `game_list, dlc_dict` as for regular games with assets, so keep the result for API completeness, since `RareGame` can handle those games properly.
RareGame.saves
Remove unused attributes and clean layout code.
Signed-off-by: loathingKernel <142770+loathingKernel@users.noreply.github.com>