support custom screens / rooms

[landonr]

add support for multiple custom screens. Screens can show Switches, Lights, Sensors, Text Sensors and Commands currently

this is way cleaner than grouping all the domains together. i am pretty stoked

I also fixed the menu so going back goes BACK instead of always to the root menu.

config:

homeThing:
  screens:
    - name: Desk Screen
      entities:
        - type: command
          name: "desk nudge up"
          command:
            - homeassistant.service:
                service: button.press
                data:
                  entity_id: "button.desk_position_nudge_up"
        - type: command
          name: "desk nudge down"
          command:
            - homeassistant.service:
                service: button.press
                data:
                  entity_id: "button.desk_position_nudge_down"
        - id: light_desk_lamp
          type: light
    - name: Settings Screen
      show_version: True
      entities:
        - id: "restart_switch"
          type: switch
        - id: wifi_ssid
          type: text_sensor
        - id: wifi_signal_percent
          type: sensor
        - id: wifi_ip
          type: text_sensor

text_sensor:
  - platform: wifi_info
    ip_address:
      name: IP Address
      internal: True
      id: wifi_ip
    ssid:
      name: SSID
      internal: True
      id: wifi_ssid

sensor:
  - platform: wifi_signal # Reports the WiFi signal strength/RSSI in dB
    name: "WiFi Signal dB"
    id: wifi_signal_db
    update_interval: 60s
    entity_category: "diagnostic"
    internal: True

  - platform: copy # Reports the WiFi signal strength in %
    source_id: wifi_signal_db
    name: "WiFi Signal %"
    id: wifi_signal_percent
    internal: True
    filters:
      - lambda: return min(max(2 * (x + 100.0), 0.0), 100.0);
    unit_of_measurement: "Signal %"
    entity_category: "diagnostic"