Add resolver support for CIDv1 and Base32

[lidel]

(part of Migration to CIDv1 https://github.com/ipfs/ipfs/issues/337)

Problem

Right now only multihash resolver exists and it means directory listing assumes everything is CIDv0 in Base58btc:

js-ipfs-http-response/src/resolver.js

Line 54 in 4f1ace2

currentCid = new CID(mh.fromB58String(memo))

js-ipfs-http-response/src/resolver.js

Line 75 in 4f1ace2

multihashOfNextFile = mh.toB58String(link.multihash)

This means response for https://js.ipfs.io/ipfs/bafybeibrpdf53xmnhkspaiyo46hqw6avk3vo3tvggwc2szzybd2a5cn24y/img/ is an error:

(when js-ipfs is running in service worker)

Solution

resolver.multihash should be removed/deprecated and replaced by base-agnostic resolver.cid

[lidel]

@vasco-santos I want to re-use ipfs-http-response in ipfs-companion, but need CIDv1 support.
Is it okay for me to create PR with proposed solution, or do you want to solve it some other way?

[vasco-santos]

Hello @lidel , thanks for reporting this! 👍

Create a PR with the proposed solution please 🙂