docs: update delegate example to include ipfs setup instructions

[jacobheun]

This updates the delegate routing example to include instructions for setting up the go-ipfs node locally to support the needed API endpoints.

I also added an "Add Data" field to the UI and instructions to demonstrate content providing being delegable.

[vasco-santos]

LGTM

[lidel]

I tried to follow instructions but I am getting error 404 when calling dht/findpeer with latest go-ipfs master as noted in ipfs/js-ipfs#2155 (comment):

For the record, I was unsuccessful with Gateway.APICommands and go-ipfs v0.4.21-rc3. Seems that neither ipfs/kubo#5565 nor ipfs/kubo#5565 were merged, and undocumented APICommands setting added in ipfs/go-ipfs-config#10 is simply ignored.

Any Idea what I am missing?

[jacobheun]

@lidel I started with a fresh setup locally and I am hitting issues now too. Going to look more into this, I'm assuming it's a configuration issue because my ipfs version has not changed.

[lidel]

@jacobheun fyi Gateway.APICommands is not wired to anything in go-ipfs (ipfs/kubo#5565 (comment)), which blocks these docs from being useful.

[alanshaw]

I'm planning on giving this a wirl tomorrow - will let you know how it works out!

[olizilla]

@alanshaw but tomorrow never came.

[alanshaw]

😭 sorry! https://www.youtube.com/watch?v=JuntWQBJ5GM

[autonome]

I'll never forget the look in Oli's eyes when I brought up that movie in the course of regular conversation.

[lidel]

Yikes, we forgot about this one 🙈
I filled ipfs/kubo#8059 and added it to our maintenance backlog.
(check it out if you have strong feelings about how Gateway.APICommands should work)

[vasco-santos]

@lidel this is quite outdated. We should close this as #507 (comment) is the new PR, which is also blocked

[lidel]

K, let's continue in #507 (comment)