add auto_removed_folder_test / uuid_test
 Changes to be committed:
	modified:   app_info/error_writer.hpp
	modified:   envs/os.hpp
	modified:   utils/auto_removed_folder.hpp
	modified:   utils/uuid.hpp
	modified:   utt/cases.hpp
	modified:   utt/icase.hpp
	modified:   utt/main.cpp
	modified:   utt/utt_assert.hpp
	new file:   utt/utt_error_handle.hpp
	deleted:    utt_cases/envs/nowadays_test.cpp
	new file:   utt_cases/envs/nowadays_test.hpp
	modified:   utt_cases/sync/single_entry_test.hpp
	new file:   utt_cases/utils/auto_removed_folder_test.hpp
	modified:   utt_cases/utils/sweeper_test.hpp
	new file:   utt_cases/utils/uuid_test.hpp
	modified:   utt_cases/utt/utt_self_case.hpp