Add RAPT Temp Controller#301

The addition of the RAPT Pill Hydrometer to the grainfather app has been extremely useful. Thank you so much for adding this.

RAPT however also have a temperature controller which manages fermentation steps. Would it be possible to also add an integration for this into the equipment tab of the GF app?

Please add connectivity for the Rapt temperature controller to the Grainfather app. Thank you

This would be very beneficial since the Pill (or other wireless sensor, like Tilt) is sitting in the liquid itself, which will give us a more accurate sense of the liquid temperature. There could be a fallback to the wired sensor if telemetry goes missing for a while (like a dead battery or signal issue).