Write concept doc about peer routing

[yusefnapora]

Could potentially also address content routing and cover ipfs-inactive/docs#111

We should have a high-level into that defines what peer routing is and builds to an overview of how the kad DHT works in practice.

[xiaokugua250]

+1

[kason-huang]

+1

[SamNormcoreWayne]

Interested in making a contribution for this doc

I am not sure whether you need help or not since now it is the last day of 2021.

[mxinden]

@SamNormcoreWayne help is always very much appreciated!

[SamNormcoreWayne]

@SamNormcoreWayne help is always very much appreciated!

I will try to raise a PR or something following your contribution rules as long as I finished my related works

[poolsar42]

@SamNormcoreWayne Hey, I just opened a PR, but it's just a draft. Please check it when you have time and correct/modify anything there
Sorry that I made a PR on this topic, without waiting for you 🙏 I hope you will still be able to check if everything is ok and make your contribution

[MarcoPolo]

Just to clarify the ask here a bit, I think it's okay for something to be a small doc about what peer routing is at a high level and how it uses the dht and roughly how the DHT works. I don't think this should attempt to explain Kademlia from first principles. See my comment here: #147 (comment)