feature(collections): Роутинг на поиск

lib/screens/collections/widgets/collections_app_bar.dart

@@ -62,7 +62,20 @@ class CollectionsAppBar extends StatelessWidget implements PreferredSizeWidget {
             if (!isDebug) return SizedBox();
             return Row(
               children: [
-                AppBarIconButton(icon: Assets.icons.typeSearch, onTap: () {}),
+                AppBarIconButton(
+                  icon: Assets.icons.typeSearch,
+                  onTap: () {
+                    context.pushRoute(
+                      CollectionSearchRoute(
+                        onCollectionSelect: (collection) {
+                          context.pushRoute(
+                            CollectionDetailRoute(collection: collection),
+                          );
+                        },
+                      ),
+                    );
+                  },
+                ),
                 AppBarIconButton(icon: Assets.icons.typeDownload, onTap: () {}),
                 AppBarIconButton(
                   icon: Assets.icons.typeSort,