Option to run @helia/http as Rapide

[meandavejustice]

After we get #289 completed. We should look into a version/option to run as Rapide.

I'll need to spend a bit more time thinking about this and familiarizing myself with Rapide, but initial thoughts are that each gateways gets a service worker (worker thread if Nodejs). I'm assuming there is some library that provides an api which will let us treat them the same.

[achingbrain]

This should be unblocked now - an RC of @helia/http is available - npm i @helia/http@next

[SgtPooki]

We currently do round-robin based on a reliability function in our trustless gateway block-brokers. I'm sure we could benefit from some smarter downloading logic.

Making that functionality extensible, so users could implement their own download prioritization/parallelization, would be really cool.

Looks like some related issues will be helpful if we decide to implement some sort of Rapide in Helia:

• RAPIDE Master Plan go-libipfs-rapide#12
• https://www.youtube.com/watch?v=Cv01ePa0G58

[SgtPooki]

Also related tangentially:

• WebSeed specifications specs#444
• IPIP-0445: Option to Skip Raw Blocks in Gateway Responses specs#445

These came about after conversations between @lidel and @Jorropo to

minimize the number of requests Rapide has to do to learn about the shape of the DAG + be able to safely leverage deserialized responses from legacy/dumb gateways and http mirrors as webseeds