- set to display "warming up until xx:xx" until 120 minutes after the sensor session was started in the transmitter)
- most Dexcom users know this but it looks useful in the Libre 2 BLE UI, so we can just implement it here too
- implemented to ensure a minimum time has passed since sensor activation
- especially necessary for Libre sensors (either Libre 2 BLE or Libre through transmitters) that can transmit glucose values immediately after activation. The first 50 minutes can often produce very unreliable values so it's better to just not process anything during this time.
- note that there is no set time after which the sensor values are reliable. Sometimes after 10 minutes, values are good. Sometimes it needs 30 or even 40 minutes.
- warm-up time is therefore initially set to 45 minutes warm-up time but minimumSensorWarmUpRequiredInMinutes can be edited in ConstantsMaster.swift