feat: add atoi function

ft_memcmp.c

@@ -0,0 +1,10 @@
+#include "libft.h"
+
+// int	ft_memcmp(const void *s1, const void *s2, size_t n)
+// {
+// 	const unsigned char *s1_ptr;
+// 	const unsigned char *s2_ptr;
+// 	size_t				i;
+
+// 	while ()
+// }