feat(frontend): Simple in memory cache for tagger client

frontend/lib/api/tagger/repository_tagger_cache_client.dart

@@ -0,0 +1,51 @@
+import 'package:flutter/foundation.dart';
+
+import 'repository_tagger_client.dart';
+
+
+/// Simple tagger client cache layer
+class RepositoryTaggerCacheClient implements RepositoryTaggerClient {
+  RepositoryTaggerCacheClient({
+    @required this.delegate,
+  });
+
+  final RepositoryTaggerClient delegate;
+
+  List<SimpleRepository> _cachedStarredRepos = [];
+
+  @override
+  Future<UserTag> addTag(CreateTagInput input) => delegate.addTag(input);
+
+  @override
+  Future<DetailedRepository> detailedRepo(int id) => delegate.detailedRepo(id);
+
+  @override
+  Future<bool> hasSession() => delegate.hasSession();
+
+  @override
+  Future<String> oauth() => delegate.oauth();
+
+  @override
+  Future removeTag({int githubId, int userTagId}) => delegate.removeTag(
+        githubId: githubId,
+        userTagId: userTagId,
+      );
+
+  @override
+  Future<TagRepositoriesResponse> repositoriesByTag(int id) =>
+      delegate.repositoriesByTag(id);
+
+  @override
+  Future<List<SimpleRepository>> starredRepos() async {
+    if (_cachedStarredRepos.isEmpty) {
+      final repos = await delegate.starredRepos();
+
+      _cachedStarredRepos = repos;
+    }
+
+    return _cachedStarredRepos;
+  }
+
+  @override
+  Future<List<UserTag>> userTags() => delegate.userTags();
+}

frontend/lib/main.dart

@@ -71,10 +71,19 @@ class TaggerApp extends StatelessWidget {
       }))
       ..interceptors.add(LogInterceptor(responseBody: false));
 
-    final tagger = Get.put(RepositoryTaggerClient(
-      dio,
-      baseUrl: getTaggerUrl(),
-    ));
+    final tagger = Get.put<RepositoryTaggerClient>(
+      RepositoryTaggerCacheClient(
+        delegate: RepositoryTaggerClient(
+          dio,
+          baseUrl: getTaggerUrl(),
+        ),
+      ),
+    );
+
+    // To fix issues related to
+    // flutter/get url handlers we need to make sure
+    // that get doesn't delete home controller.
+    Get.put(HomeController());
 
     return TaggerApp._(
       dio: dio,