0x08-recursion

Tasks for this project:

0. Write a function that prints a string, followed by a new line
1. Write a function that prints a string in reverse
2. Write a function that returns the length of a string
3. Write a function that returns the factorial of a given number
4. Write a function that returns the value of x raised to the power of y
5. Write a function that returns the natural square root of a number
6. Write a function that returns 1 if the input integer is a prime number, otherwise return 0
7. Write a function that returns 1 if a string is a palindrome and 0 if not