Implement a new fn similar to Provide that doesn't only support peerIDs, but also []byte values

[itsmeadi]

Currently we have

• dht.PutValue(key, value) // put/override existing value
• dht.Provide(key) // append but only supports peerID

What if we implement a third fn

• dht.Append(key, value)
  It will be similar to Provide, just we store a value instead of peerID, so that when we try
• dht.AppendGet(key)[]Value
  We get a list of values

I did a small POC on my local, replacing peer.ID with a string value in Provide and its child functions, it seems working but i need help from you guys, is this a right approach, or any pitfalls I am not seeing