Add supplies properties

[gmag11]

Supplies timers names seem to be incorrect. This fixes them so that they are showed on Vacuum Card.

I'm not a skilled Python programmed so maybe this has some faults. Feel free to correct what you consider.

My Vacuum Card configuration for your reference:

actions:
  - icon: mdi:silverware-fork-knife
    name: Clean kitchen
    service: script.1586192082530
compact_view: false
entity: vacuum.mi_robot_vacuum_mop
image: default
show_status: true
stats:
  cleaning:
    - attribute: s_area
      subtitle: Área limpia
      unit: m2
    - attribute: s_time
      subtitle: Tiempo limpiado
      unit: minutes
  default:
    - attribute: filter_left
      subtitle: Filtro
      unit: horas
    - attribute: main_brush_left
      subtitle: Rodillo
      unit: horas
    - attribute: side_brush_left
      subtitle: Cepillo
      unit: horas
    - attribute: sensor_dirty_left
      subtitle: Mopa
      unit: horas
type: custom:vacuum-card

[KrzysztofHajdamowicz]

Hello! Your PR needs some refactoring, this code is not STYJ02YM and STYTJ02YM compatible. My guess it's compatible with china version, EU version doesn't provide necessary attributes and integration crashes :(