Channel Manager - developer option to disable the Component Delete button

It would be great if a developer may set a container item component node to "non-deletable".

An example, candidate solution idea (as a low-hanging fruit possibly) is as follows:

1. Add a new property to the hst:containeritemcomponent node type:

   [hst:containeritemcomponent] > hst:abstractcomponent
     orderable
     //...
     - hst:deletedisabled (boolean) // false by default
   

2. The channel manager code for the editComponentMainController.js can check the property, hst:deletedisabled, and if it's set to true, then the UI js code simply disable the "Delete" button. For example,
   brxm/community/channel-manager/frontend-ng/src/app/channel/sidePanels/rightSidePanel/editComponent/editComponentMain/editComponentMain.controller.js

     // The existing function to disable the delete button for some other cases.
     isDeleteDisabled() { 
       // TODO: check the hst:deletedisabled property too to disable the deletion if set to true.
       return this.isReadOnly() || !this.EditComponentService.isReadyForUser();
     }
   

This simple improvement provides great solutions to many many real use cases:

• Editors may not delete a core component in the component container area but they may do for other components, even changing the orders.
• The flag property, hst:deletedisabled, can be set only by developers, not to allow an accidental mistakes by users to delete a core components while editing others in the same container area.