Challenge: Build a Mini Library System

Create a class named Library with a method called borrowBook. This method should:

• Accept the name of a book as a parameter.
• Throw an Exception with a clear message if the requested book is not in the library's list of books.
• If the book is available, remove it from the list (no need to return anything).

When calling the borrowBook method, catch the exception and print its message using echo.

Follow these steps:

• Implement the borrowBook method inside the Library class.
• In the provided code, try to borrow the book 'The Great Gatsby'.
• Catch any exception and print its message.