Add mobile dark mode and user setting (#468)

* styling light and dark theme

* Icon topbar

* Fixed app bar title dark theme

* Fixed issue with getting thumbnail for things

* Refactor sharing page

* Refactor scroll thumb

* Refactor chip in auto  backup indiation button

* Refactor sharing page

* Added theme toggle

* Up version for testflight build

* Refactor backup controller page

* Refactor album selection page

* refactor album pages

* Refactor gradient color profile header

* Added theme switcher

* Register app theme correctly

* Added locale to the app

* Added translation key

* Styling for bottomsheet colors

* up server version

* Fixed font size

* Fixed overlapsed sliverappbar on photos screen

mobile/lib/modules/album/ui/album_viewer_appbar.dart

@@ -150,7 +150,7 @@ class AlbumViewerAppbar extends HookConsumerWidget with PreferredSizeWidget {
 
     void _buildBottomSheet() {
       showModalBottomSheet(
-        backgroundColor: immichBackgroundColor,
+        backgroundColor: Theme.of(context).scaffoldBackgroundColor,
         isScrollControlled: false,
         context: context,
         builder: (context) {