feat: #165 用户星标子组

assets/fonts/Star.ttf

lib/core/db_manager.dart

lib/core/net/api.dart

lib/core/themes/custom_icons.dart

lib/core/widgets/star.dart

lib/modules/projects/group_and_project_list_tile.dart

lib/modules/projects/group_details/group_and_project.dart

.../projects/group_details/group_and_project_repository.dart

...projects/group_details/subgroup_and_project_provider.dart

lib/modules/projects/groups/group_provider.dart

lib/modules/todo_list/widgets/member_repository.dart

pubspec.yaml

test/core/widgets/star_test.dart

test/integration_tests/create_issue_in_sub_group_test.dart

...tegration_tests/create_issue_in_sub_group_test.mocks.dart

test/integration_tests/go_into_sub_group_page_test.dart

.../integration_tests/go_into_sub_group_page_test.mocks.dart

...ojects/group_details/group_and_project_provider_test.dart

.../group_details/group_and_project_provider_test.mocks.dart

...odules/projects/group_details/group_and_project_test.dart