Serial Port to MQTT Bridge

Can't run this on docker due to Serial Port forwarding limitations on docker.

1. bridge.py

Contains python program to bridge Serial Port and MQTT Server.

• Data received on serial port will be published to topics based on data type.

  Data Type	Topic
  Container Telemetry	cansat/container
  SP1 Telemetry	cansat/sp1
  SP2 Telemetry	cansat/sp2

• Any data published to topic cansat/sendData will be sent to serial port.

2. serial_demo.cpp

Contains a sample code to be written to Arduino (data format to be received on GS xbee).

• Complex file structure due to PlatformIO.
• Check serial_demo.cpp for more details.