YoMo-Zipper communication

[Hong Xiaojian]

For edge-mesh feature, YoMo-Zipper will be geo-distributed and closer to end users, all YoMo-Zippers need to communicate with each other.

Each YoMo-Zipper is both a Sender and a Receiver:

• Sender: send the output stream to other yomp-zippers in edge-mesh network.
• Receiver: receive the input stream from other yomp-zippers.