Nexia: Expose RoomIQ sensors as HA sensor entities

It would be helpful to have Nexia RoomIQ sensors available as HA sensor entities. My main interest is for monitoring of the Z-Wave sensor battery levels, but it would also allow for tracking temperature and humidity on a per-sensor basis.

The information is already available to HA as shown in the following snipped from the diagnostics JSON output.

          {
            "name": "room_iq_sensors",
            "sensors": [
              {
                "id": <redacted>,
                "name": "Main Level",
                "icon": {
                  "name": "room_iq_onboard",
                  "modifiers": []
                },
                "type": "thermostat",
                "serial_number": "NativeIDTUniqueID",
                "weight": 0.5,
                "temperature": 67,
                "temperature_valid": true,
                "humidity": 38,
                "humidity_valid": true,
                "has_online": false,
                "has_battery": false
              },
              {
                "id": <redacted>,
                "name": "Master Bedroom",
                "icon": {
                  "name": "room_iq_wireless",
                  "modifiers": []
                },
                "type": "930",
                "serial_number": "<redacted>",
                "weight": 0.5,
                "temperature": 64,
                "temperature_valid": true,
                "humidity": 47,
                "humidity_valid": true,
                "has_online": true,
                "connected": true,
                "has_battery": true,
                "battery_level": 38,
                "battery_low": false,
                "battery_valid": true
              }
            ],
            "should_show": true,
            "actions": {
              "request_current_state": {
                "href": "https://www.mynexia.com/mobile/xxl_zones/<redacted>/request_current_sensor_state"
              },
              "update_active_sensors": {
                "method": "POST",
                "href": "https://www.mynexia.com/mobile/xxl_zones/<redacted>/update_active_sensors"
              }
            }
          },

I would have to agree on the battery info on any remote sensor provide by any thermostat manufacturer. Mine is from the ecobee line of smart thermostats