Set debug level and stream
The IoT Agent library comes with its own debugging library.
The debug level can be set using the setDebugLevel method.
setDebugLevel(DebugLevel::DEBUG)
The default debug level is `WARN`
The debug levels are:
`DebugLevel::OFF`
`DebugLevel::ERROR`
`DebugLevel::WARN`
`DebugLevel::INFO`
`DebugLevel::DEBUG`
`DebugLevel::TRACE`
You can also set the stream in which the debug messages will be sent by using the setDebugStream method.
setDebugStream(&Serial)
The default debug stream is Serial.