Implement RBAC migration and role management enhancements

- Added AJAX functionality to fetch role permissions for copying.
- Introduced system role management with permission checks for updates.
- Implemented role deletion with confirmation modal and backend handling.
- Enhanced user role assignment migration scripts to transition from legacy profiles to RBAC.
- Created SQL migration scripts for user roles and permissions mapping.
- Updated user interface to support new role management features including copy permissions and system role indicators.

api/v2/post/role_access_permissions.php

@@ -25,12 +25,12 @@ $criterias = [];
 
 //ADD STANDARD PARAMETERS TO ARRAY BASED ON INSERT OR UPDATE
 if ($command == 'update'){
-    $post_content['updatedby'] = $username;;
+    $post_content['updatedby'] = $username;
     $post_content['updated'] = $date;
 }
 elseif ($command == 'insert'){
     $post_content['created'] = $date;
-    $post_content['createdby'] = $username;;
+    $post_content['createdby'] = $username;
 }
 
 //CREAT NEW ARRAY AND MAP TO CLAUSE