Added adjustment of temperature due to interference from lighting

Turning on of growlights caused a sudden drop in measured temperature and a similar increase when the lights turn off; this is likely due to EMC interference from the lights on the thermocouples. This causes the propagator heating to turn on and overheat the propagator (compared to the set temperature). To avoid this, an optional (defined in the configuration file), setting to measure the offset caused, per propagator, when the lights are on is added.

Initial version

Ready for initial installation in greenhouse. Initial functionality includes:

• Configuration file to define hardware implementation.
• Multiple propagator control, one shared temperature by time schedule.
• Air heater control by time schedule.
• Lighting control based on illumination by time schedule.
• Air temperature and humidity monitoring.
• Logging to CSV file and InfluxDB database