core/commands: remove 'ipfs dht' commands, except 'query'

[hacdias]

Built on #10329. This addresses some notes in #10265 (comment):

• Removes /api/v0/dht commands, except for /api/v0/dht/query

[hacdias]

This is blocked by progress in https://github.com/ipfs/js-kubo-rpc-client, which is extremely out of date. I extracted the Go RPC cleanup to #10329, which can be merged by itself.

[hacdias]

We agreed on doing a small patch in the JS client: ipfs/js-kubo-rpc-client#215 and release as a patch release, so people get this automatically.

[lidel]

I see that #10329 is doing the same thing we did in ipfs/js-kubo-rpc-client#215 and switch DHT to /routing backend, so lgtm.

FYI:

I've bumped js lib build a few times and it finally released:

• https://github.com/ipfs/js-kubo-rpc-client/releases/tag/v3.0.3

That allowed us to restart CI job and helia-interop is green again:

• https://github.com/ipfs/kubo/actions/runs/7798384418?pr=10328

Small cosmetics inline, but ok to merge (your call when @hacdias , since you also have #10329)
Thank you for cleaning this up, in the long term will reduce a lot of confusion.