[Vuejs]-Vue component – entity multi select – is there any option to add a sorting feature?

Neither is an option using just the xml schema. You could consider to create a custom component. In the template of the component you may then use sw-entity-multi-select with a property for the Criteria object that includes sorting. In the same component you may also implement the desired drag’n’drop functionality yourself. Once you registered your custom component, you may then use it’s name for the name attribute of the component tag.

<component name="my-custom-component">