The IPNS-over-pubsub implementation waits for peers to publish updated IPNS records in order to resolve them.

Instead it should query topic peers directly for the record over libp2p-fetch.

This needs to be implemented here.

Keys should be sent as Uint8Arrays and not strings to avoid data corruption.

Spec: https://specs.ipfs.tech/ipns/ipns-pubsub-router/#layering-persistence-onto-libp2p-pubsub
Libp2p-fetch: https://libp2p.github.io/js-libp2p/interfaces/_libp2p_fetch.Fetch.html#fetch