js-multiaddr support for uTP, WebSockets and IPFS

[daviddias]

It is time to give js-multiaddr a spin and upgrade it to support uTP, WebSockets and IPFS.

multiaddr spec - https://github.com/jbenet/multiaddr
js impl - https://github.com/jbenet/js-multiaddr
go impl - https://github.com/jbenet/go-multiaddr

Note how uTP, WebSockets and IPFS are not yet recognized by multiaddr https://github.com/jbenet/js-multiaddr/blob/master/src/protocols.js#L29-L37. We need to add support for:

• uTP
• WebSockets
• IPFS

After this, we need to add support to js-mafmt to be able to validate uTP, WebSockets and IPFS too

• https://github.com/whyrusleeping/js-mafmt/blob/master/tests/test.js#L77-L83

While we are at it, we should also support WebSockets on the go-multiaddr, //cc @whyrusleeping

[daviddias]

I've done this now :) check the latest versions of multiaddr and mafmt :)