[gnome-games] (9 commits) Non-fast-forward update to branch wip/aplazas/781334-refactor-game-sources

[Adrien Plazas <aplazas src gnome org>]

The branch 'wip/aplazas/781334-refactor-game-sources' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  bb22b16... steam: Add SteamUriSource
  7bab710... steam: Add SteamGameSource.game_for_uri()
  717f075... libretro: Add LibretroGameSource.game_for_uri()

Commits added to the branch:

  973883e... core: Add UriGameFactory.get_schemes()
  d481d8e... generic: Make GenericUriGameFactory handle schemes
  474a222... generic: Make GenericUriGameSource handle schemes
  0f15f2f... utils: Add Uri.from_uri_and_scheme()
  8a21bc1... steam: Add SteamUriIterator
  16bc8fe... steam: Add SteamUriSource
  ca3f3ff... steam: Use SteamUriSource and a generic game factory
  7ee567f... steam: Remove now unused SteamGameSource
  b65f4e3... libretro: Add LibretroGameSource.game_for_uri()