Create a function that validates whether the three given integers form a Pythagorean triplet which is defined as the sum of the squares of the two smallest integers must be equal to the square of the largest integer.
isTriplet(3, 4, 5) ➞ true
// 3² + 4² = 25
// 5² = 25
isTriplet(13, 5, 12) ➞ true
// 5² + 12² = 169
// 13² = 169
isTriplet(1, 2, 3) ➞ false
// 1² + 2² = 5
// 3² = 9
isTriplet(72, 54, 90) ➞ true
isTriplet(54, 46, 77) ➞ false
isTriplet(80, 48, 64) ➞ true