Custom widget with built-in session

Prerequisites • I have searched for similar features requests in both open and closed tickets and cannot find a duplicate. • The feature is still missing in the latest stable version of Elementor ( Elementor Pro ) What problem is your feature request going to solve? Please describe. When developing custom widgets seeking to create components that are within web accessibility standards, I found myself having to create duplicates of the same widget for different occasions, this is inefficient and tiring Describe the solution you'd like If I could define a section inside my widget where in the editor the user can drag widgets inside as needed, having complete freedom to change the type of content, something very close to the behavior of an inner section but inside a widget Describe alternatives you've considered For now I'm using the REPEATER controler to simulate sections of content and SWITCHER to change how the content is displayed Additional context…