Question two:

Imagine you work for a company that manages libraries and you need to design a system to store and manage book data using a Binary Search Tree $($BST$).$ Each book's data includes the following information:

A unique book identifier $($ISBN$)$

Title of the book

Author's name

Year of publication

Your tasks are:

Tasks:

$1.$ Design the data structure for the book.

$2.$ Write a function to add a new book to the Binary Search Tree.

$3.$ Write a function to search for a book using its unique identifier $($ISBN$)$ and return its information if it exists in the tree.