[gnome-software] (8 commits) ...Merge branch '1296-calculate-app-space-usage-for-download-context-tile' into 'main'

[Philip Withnall <pwithnall src gnome org>]

Summary of changes:

  fcf793e... gs-app: Add properties for user and cache data sizes (*)
  b753b15... gs-app: Split download/installed size for the app and the d (*)
  0f50713... gs-plugin-types: Introduce GS_PLUGIN_REFINE_FLAGS_REQUIRE_S (*)
  2b93392... gs-details-page: Require GS_PLUGIN_REFINE_FLAGS_REQUIRE_SIZ (*)
  440fd01... gs-utils: Introduce gs_utils_get_file_size() (*)
  2d2d9a6... snap: Calculate cache and user data sizes for installed app (*)
  734afdf... flatpak: Calculate cache and user data sizes for installed  (*)
  ff52f76... Merge branch '1296-calculate-app-space-usage-for-download-c

(*) This commit already existed in another branch; no separate mail sent