update dr26 library, early exit if sensor not connected, minimize rs485 delay, minor SentecSensorsRS485 refactor, logging changes in host

reduce rs485 delay, add demo code of rain gauge (could also be another rs485 sensor) to client satellite and central mast

Renamed Sentec Sensors, made RS485 serial connection a singleton shared pointer, allow resetting of precipitation, added error type for non-ability to reset precipitation

Moved RS485 Return Types to ErrorTypes
Changed a MeasurementType for INA219
Moved ErrorType from ClientDataPackage to Measurement
WIP: Started specifying errors from sensor readouts