RFC: How to implement a new Libp2p transport?

[vasa-develop]

What new topic/thread/tutorial are you proposing? Please describe.
A simple guide on how to add a new Libp2p transport using Libp2p transport interface.

This guide will go through:

• The concepts of transports, what are they and why do we need them?
• What are Libp2p transports & Is there a difference in Web 2.0 & Libp2p transports? (TLDR; Libp2p provides more flexibility than Web 2.0 when using transports)
• A code walkthrough to add a new Libp2p transport for js-libp2p.