Reproduce the same behavior of the Unix command 'cat'
Under the project root directory, there is a Makefile, once launched it will
build the entire project for you and generate an executable binary named ft_cat
./ft_cat [OPTION]... [FILE]...
Concatenate FILE(s) to standard output.
With no FILE, or when FILE is -, read standard input.
-A, --show-all equivalent to -vET
-b, --number-nonblank number nonempty output lines, overrides -n
-e equivalent to -vE
-E, --show-ends display $ at end of each line
-n, --number number all output lines
-s, --squeeze-blank suppress repeated empty output lines
-t equivalent to -vT
-T, --show-tabs display TAB characters as ^I
-v, --show-nonprinting use ^ and M- notation, except for LFD and TAB.
--help display this help and exit
--version output version information and exit
$> ./ft_cat f - gOutput f's content, then standard input, then g's content.
$> ./ft_cat Copy standard input to standard output.