/**
* Returns the template for the add task modal.
*
* The template includes a .modal-overlay with a .modal-content element inside.
* The .modal-content has a close button as its first child.
*
* @returns {string} The html template for the add task modal.
*/
function getAddTaskModalTemplate() {
return /*html*/ `
<div class="modal-overlay" id="add-task-modal">
<div class="modal-content" id="modal-content">
<span class="close-btn" onclick="closeAddTaskModal()"><img src="./assets/svg/close.svg" alt="" /></span>
</div>
</div>
`;
}