feat: add Kademlia to rust peer

[p-shahi]

closes #16 by reintroducing Kademlia (which was deleted as a part of 074b376)

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
universal-connectivity	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 4, 2023 1:10am

[mxinden]

Note that adding the Kademlia NetworkBehaviour in itself is not quite enough. You would (a) need to execute the bootstrap method regularly and (b) actively add peers (like you do, commented out, for the bootstrap nodes).

You can find an example here:

(a) https://github.com/mxinden/rust-libp2p-server/blob/4d887c720bf25ad282c58d8f7d9773715a2b5c70/src/main.rs#L162-L169

(b) https://github.com/mxinden/rust-libp2p-server/blob/4d887c720bf25ad282c58d8f7d9773715a2b5c70/src/main.rs#L172-L199

The latter will be automated once we have libp2p/rust-libp2p#2680.