Write a function named count_in_range that accepts parameters: an array of integers, a minimum integer, and a
maximum integer. The function should return the number of elements in the array within the range of the given minimum and maximum values (inclusive).
For example, if the array $arr contains [28, 1, 17, 4, 41, 9, 59, 8, 31, 30, 25], the call of count_in_range($arr, 10, 30) should return 4. If the array is empty, return 0.
You may assume that the array passed is non-null and contains only integers. If the
passed minimum value is greater than the passed maximum, your function should throw an
Exception with the message, "Error: minumum must be less than or equal to maxiumum".
