fix builtin runner exit - case 4 and 5

[biralavor]

treat cases for exit with arguments

Previous cases (1, 2 and 3), here: #197

Case 4:

exit 'signed long long' = 9223372036854775807 bash result:

exit

and it exits with 255

However:

• if the code > 9223372036854775807 -> it's an overflow, the builtin treats it as a string, and so gives the classic Case 3 error, from #197
• else if the code <= 9223372036854775807 -> it do a modulo operation and the result is from 0 to 255
• else if the code < -9223372036854775807 -> it's an overflow, the builtin treats it as a string, and so gives the classic Case 3 error, from #197

---

Case 5:

exit 4ddfkj bash result:

exit
bash: exit: %s: numeric argument required

and it exits with 2