CrazyFlie Backend Mod

Problem Description

In order to support the CrazyFlies into the backend we will need to support sending to the created adapter. As it stands currently the backend is hardcoded to only speak to the file descriptor that is connected to the quadcopter or a different local file descriptor. Additionally, the backend will have to support changing where commands are being sent.

Proposed Solution

We will add another command for changing which file descriptor that is being written to when sending a packet. The next change includes being able to connect to the CrazyFlie adapter similar to being able to open a socket to the zybo board.