Commented that the comma search at the end is due to the comma being able
to change index due to a varying callsign length for the telemetry
callsign. Also removed an unused comment variable. This code does NOT
check for valid length of input data.
Committing initial code that supports the generation of an APRS unit/label
string. This was testing by sending telemetry labels to APRS-IS and
checked on aprs.fi. Not cleaned up yet.
Modeled off of the PositionReport class, I created a TelemetryReport and
used similar serialization to create a working packet that was uploaded to
aprs.fi for testing.