Dan Chiarlone

## Description Implement `pthread_kill`. ## References https://man7.org/linux/man-pages/man3/pthread_kill.3.html

## Description Implement `sem_wait`. ## References https://man7.org/linux/man-pages/man3/sem_wait.3.html

## Description Implement `sem_post`. ## References https://man7.org/linux/man-pages/man3/sem_post.3.html

## Description Implement `sem_destroy`. ## References https://man7.org/linux/man-pages/man3/sem_destroy.3.html

## Description Implement `sem_init`. ## References https://man7.org/linux/man-pages/man3/sem_init.3.html