118 - Implement shared album feature (#124)

* New features 
  - Share album. Users can now create albums to share with existing people on the network.
  - Owner can delete the album.
  - Owner can invite the additional users to the album.
  - Shared users and the owner can add additional assets to the album.
* In the asset viewer, the user can swipe up to see detailed information and swip down to dismiss.
* Several UI enhancements.

mobile/lib/shared/views/tab_controller_page.dart

@@ -15,6 +15,7 @@ class TabControllerPage extends ConsumerWidget {
       routes: [
         const HomeRoute(),
         SearchRoute(),
+        const SharingRoute(),
       ],
       builder: (context, child, animation) {
         final tabsRouter = AutoTabsRouter.of(context);
@@ -34,7 +35,8 @@ class TabControllerPage extends ConsumerWidget {
                   },
                   items: const [
                     BottomNavigationBarItem(label: 'Photos', icon: Icon(Icons.photo)),
-                    BottomNavigationBarItem(label: 'Seach', icon: Icon(Icons.search)),
+                    BottomNavigationBarItem(label: 'Search', icon: Icon(Icons.search)),
+                    BottomNavigationBarItem(label: 'Sharing', icon: Icon(Icons.group_outlined)),
                   ],
                 ),
         );