Add APIs for System users

Add APIs for System users

- Add aul_open_app_for_uid()
- Add aul_resume_app_for_uid()
- Add aul_resume_pid_for_uid()
- Add aul_terminate_pid_for_uid()
- Add aul_terminate_pid_async_for_uid()
- Add aul_app_get_running_app_info_for_uid()
- Add aul_app_get_all_running_app_info_for_uid()
- Add aul_app_get_status_for_uid()
- Add aul_add_loader_for_uid()
- Add aul_remove_loader_for_uid()
- Add aul_app_get_pid_for_uid()
- Add aul_pause_app_for_uid()
- Add aul_pause_pid_for_uid()

Change-Id: I926cd03afa82c312b24e251c4707f69f7c39432d
Signed-off-by: Hwankyu Jhun <h.jhun@samsung.com>