FR: Add ability to push current_temperature to TCC from multiple sensors

[b-hud]

Feature Request: Currently the only temperature feedback to the Honeywell MyTotalConnectComfort is via the thermostat's built-in temperature sensor. Would like to allow the ability for a user to substitute other temperature feedback, like from other sensors placed in different locations.

Inspiration: this article about how to allow the user to select which temperature sensor drives the thermostat