Add page in Concepts about IPFS in resource constrained environments

[ElPaisano]

🚧 Not ready for review

Describe your changes

Addresses https://github.com/ipfs/ipfs-docs/issues/1412

Files changed

• Adds /docs/concepts/ipfs-resource-constrained.md

Checklist before requesting a review

• [ ] Complete TODO items in .md file
• [ ] Passing the beta version of the Check Markdown links for modified files check. Action results can be viewed here.

Checklist before merging

• [ ] Passing all required checks (The beta Check Markdown links for modified files check is not required)

[2color]

Great start!

Some ideas here:

• expand on the high level responsibilities of a kubo node: Managing swarm connections (including all the crypto handshakes), managing the blocks repo, exposing the rpc API, exposing a gateway http server, running a DHT server/client, handling bitswap transfer.
• touch on the recommended defaults for all of this (good opportunity to do a sweep if the baseline requirements are consistent for kubo)
• dive into some of the approaches for resource constrained environments: verified retrieval from gateways, delegated routing over HTTP (instead of a DHT), etc.

[ElPaisano]

@2color wondering if we could crowdsource finishing up this PR.

[2color]

What do you mean exactly by crowdsourcing this?

I'm happy to take a stab at this btw.