Add user roles management page and update user permissions handling

- Created a new `user_roles.php` file for managing user roles and permissions.
- Implemented pagination, filtering, and sorting for user roles.
- Updated `users.php` to use the new authorization structure for permissions.
- Changed API version from v1 to v2 in `users.php` for user data retrieval.
- Modified `webhook_mollie.php` to include account hierarchy in license creation.
- Refactored invoice generation and email sending logic in `webhook_mollie.php`.
- Introduced a new `webhook_paypal.php` file to handle PayPal webhook notifications.
- Implemented payment status updates and license creation logic in `webhook_paypal.php`.
- Added helper functions for PayPal webhook signature verification and access token retrieval.

firmwaretool.php

@@ -1,7 +1,7 @@
 <?php
 defined(page_security_key) or exit;
 
-if (debug && debug_id == $_SESSION['id']){
+if (debug && debug_id == $_SESSION['authorization']['id']){
   ini_set('display_errors', '1');
   ini_set('display_startup_errors', '1');
   error_reporting(E_ALL);  
@@ -9,11 +9,11 @@ if (debug && debug_id == $_SESSION['id']){
 
 $page = 'firmwaretool';
 //Check if allowed
-if (isAllowed($page,$_SESSION['profile'],$_SESSION['permission'],'R') === 0){
+if (isAllowed($page,$_SESSION['authorization']['permissions'],$_SESSION['authorization']['permission'],'R') === 0){
     header('location: index.php');
     exit;
 }
-$bearertoken = createCommunicationToken($_SESSION['userkey']);
+$bearertoken = createCommunicationToken($_SESSION['authorization']['userkey']);
 
 
 template_header('Firmwaretool', 'firmwaretool','view');
@@ -33,7 +33,7 @@ if (isset($_GET['equipmentID'])){$returnpage = 'equipment&equipmentID='.$_GET['e
 
 
 //SHOW BACK BUTTON ONLY FOR PORTAL USERS
-if (isAllowed('dashboard',$_SESSION['profile'],$_SESSION['permission'],'R') != 0){
+if (isAllowed('dashboard',$_SESSION['authorization']['permissions'],$_SESSION['authorization']['permission'],'R') != 0){
   $view .= '
       <div class="title-actions">
           <a href="index.php?page='.$returnpage.'" class="btn alt mar-right-2">←</a>