Awesome books: plain JavaScript with objects

[zhorabay]

• [ ] In this branch, we:
• Implemented only a basic UI with plain HTML;
• Created a collection that keeps a list of books;
• Created a function to add a new book to the collection, with title and author;
• Created a function to remove a book from the collection;
• Displayed all books saved in the collection in the top part of the page;
• Used only plain JavaScript.
• Made that when a user clicks the "Add" button: A new book is added to the collection. The new book is displayed in the page.
• Make sure that when a user clicks the "Remove" button: The correct book is removed from the collection. The correct book dissapears from the page.