Updated the "Per Author's Details" page to add an "Edit Author" button and created the appropriate page whenever that button is clicked.

Updated the "Per Book's Details' page to add an "Edit Book" button and created the appropriate page whenever that button is clicked.

Added a link to add authors in the Homepage and created the appropriate "Add New Authors" page respectively.

Added a link to add books in the Homepage and created the appropriate "Add New Books " page respectively.