Add shortcuts icon toggle

[gtxaspec]

Add toggledIcon capability:

- name: Record
  icon: mdi:record-circle-outline
  toggledIcon: mdi:lightbulb-outline
  isToggled: false
  entity: binary_sensor.example
  service: switch.toggle
  service_data:
    entity_id: switch.camera_record

[AlexxIT]

I don't think this is good idea because we don't know start state. Service may be toggle from different start state and icon will be wrong.

[gtxaspec]

@AlexxIT
the user can set the start state:
isToggled: false or isToggled: true

I think it is an intermediary solution for now to enhance the UI... We could try to figure out how to query state and update the icon dynamically?

[gtxaspec]

@AlexxIT I added support for entity: binary_sensor.example, and i tested reading the state, it works well.