feat(account): 增加账号中心页面与入口

lib/core/data/repositories/account_repository.dart

@@ -40,7 +40,8 @@ class HttpAccountRepository implements AccountRepository {
   Future<AccountExport> export() => _api.export();
 
   @override
-  Future<DateTime?> deactivate(String reason) => _api.deactivate(reason: reason);
+  Future<DateTime?> deactivate(String reason) =>
+      _api.deactivate(reason: reason);
 
   @override
   Future<void> cancelDeactivation() => _api.cancelDeactivation();