TODO LIST:
- Add export and unset builtins ✅
- Make env interaction easier (ft_add_env -> ft_set_env, recode ft_del_env) ✅
- Add export with no argument functionnality (print sorted env with "DECLARE -X") ✅
- Add cd functionnality ✅
- Make variables work in the shell ✅
- Fix ^C showing in terminal (look at termios/caps) ✅
- Increase SHLVL variable when starting the shell ✅
- Fix norminette ✅
FINAL:
- Verify ALL leaks ✅
- Test a lot of stuff ✅
- Check correction subject to make sure everything is fine ✅
- Ready for review ✅