Default actions for an entity row (in entity card) / headers / footers

Hi

At this moment TAP, double TAP or Hold actions need to be specified per entity.
Example:

  - type: buttons
    entities:
      - entity: scene.woonkamer_sunset
        name: tropical
        tap_action:
          action: call-service
          service: hue.activate_scene
          service_data:
            dynamic: false
          target:
            entity_id: scene.woonkamer_sunset
        double_tap_action:
          action: call-service
          service: hue.activate_scene
          service_data:
            speed: 78
            dynamic: true
          target:
            entity_id: scene.woonkamer_sunset
        hold_action:
          action: more-info
      - entity: scene.slaapkamer_sunset
        # ... the same settings repeated with only another entity_id

For e.g .scenes (example above) the actions are basically the same for every scene entity (except the entity itself. It would be great if default actions can be specified. That could look like:

  - type: buttons
    tap_action:
       action: call-service
       service: hue.activate_scene
       service_data:
          dynamic: false
       target:
          entity_id: entity # = variable/keyword that represents the actual entity pressed
    double_tap_action:
        action: call-service
        service: hue.activate_scene
        service_data:
           speed: 78
           dynamic: true
        target:
           entity_id: entity # = variable/keyword that represents the actual entity pressed
    hold_action:
        action: more-info
    entities:
      - entity: scene.woonkamer_sunset
        name: tropical
      - entity: scene.slaapkamer_sunset
        name: tropical