How to create custom objects beyond the built-ins featuredImage, author, mainTag

First of all, thank you for the efforts putting together this great tool.

Coming from Vapid, I would like to understand how to create custom JS objects that can be dynamically translated into theme settings.

With Vapid, creating a markup like:

    

        

            {{#section services multiple=true sortable=true}}
            

                

                    

                            <h4 class="title">{{name}}</h4>
                        
                    

                        <span class="svg-icon"><i class="flaticon-hills"></i></span>
                    
                    

                        {{service_image_summary label="Service Image summary" required=true type=image width=600 height=324 alt="Landscaping and lawn care services"}}
                        
                    
                    

                        {{service_summary label="Service summary description" type=html required=true images=true priority=14 }}
                    
                
            
            {{/section}}
        
    

generates options in the the dashboard (equivalent of theme settings in Publii) like:

In summary, I would like to be able to create dynamic page builders (beyond blog context), with multi-level partial views.

Is it possible? If not, would be a good feature suggestion (I would love to contribute to make it happen).

Thank you!