A custom implementation of the standard C library functions.

This library recreates key functions from <string.h>, <ctype.h>, <stdlib.h>, and more,
allowing you to understand low-level memory handling, string manipulation, and functional decomposition in C.

The goal of Libft is to build a personal static library libft.a containing a set of
essential functions.

Reimplementations of standard C library functions:

• memset, bzero, memcpy, memmove, memchr, memcmp
• strlen, strlcpy, strlcat, strchr, strrchr, strncmp, strnstr, strdup
• atoi
• isalpha, isdigit, isalnum, isascii, isprint, toupper, tolower
• calloc

Helper functions for strings, memory, and file descriptors:

• substr, strjoin, strtrim, split
• itoa, strmapi, striteri
• putchar_fd, putstr_fd, putendl_fd, putnbr_fd