lpcmanager

Add check_if_url_is_reachable POU to test whether input URL returns status 200 when invoked from PLC
pthread_mutex_lock(&UART_WakeCondLock);
UART_task_active = 0;
pthread_cond_signal(&UART_WakeCond);
pthread_mutex_unlock(&UART_WakeCondLock);
pthread_join(UART_task, NULL);
closeserial(UART_fd);