feat: add PalindromeNumber utility class to check for palindromic integers

Author: priyanshuvishwakarma273403

src/main/java/com/thealgorithms/maths/PalindromeNumber.java

@@ -1,5 +1,16 @@
 package com.thealgorithms.maths;
 
+/**
+ * A class to check if a given number is a palindrome.
+ * A palindromic number is a number that remains the same when its digits are reversed.
+ *
+ * @see com.thealgorithms.strings.Palindrome
+ * @see com.thealgorithms.stacks.PalindromeWithStack
+ * @see com.thealgorithms.bitmanipulation.BinaryPalindromeCheck
+ * @see com.thealgorithms.maths.LowestBasePalindrome
+ * @see com.thealgorithms.datastructures.lists.PalindromeSinglyLinkedList
+ * @see com.thealgorithms.maths.PalindromePrime
+ */
 public final class PalindromeNumber {
     private PalindromeNumber() {
     }