Update Kubo to new HTTP Delegated Routing

[BigLep]

Done Criteria

Kubo is implementing ipfs/specs#337 using the HTTP Delegated Routing version from ipfs/go-delegated-routing#63

Specifically:

1. Add a new router type to the config, something like http or http-content-routing
2. Remove reframe router type until its issues are resolved

Why Important

See motivation in ipfs/specs#337

Notes

• Estimate in Updated/new HTTP API Migration go-delegated-routing#63 was 2 developer days

[lidel]

Quick notes about default, implicit configuration (:point_right: based on feedback from Juan today):

• Change routing defaults in Kubo to "DHT + implicit list of HTTP routers" (IPIP-337: Delegated Content Routing HTTP API specs#337)
  • Follow UX established for DNS
    • user's JSON config remains empty, which allows us to update/expand implicit defaults in future releases
    • user is in control and can remove/update implicit routers if they wish
      • this can be done by setting Routing.Type to custom and defining own Routing.Routers
  • only cid.contact for now, we can add Cloudflare (already used for DoH) when they run their own indexer
• Probably a good time to switch Routing.Type to OptionalString
  • write config migration that removes Routing.Type (switching to implicit default) when value is dht
    • without this all existing nodes will be stuck with DHT-only
  • change implicit default from dht to auto and document it means DHT + specific implicit routers

[BigLep]

I didn't see this earlier but I created #9454 for tracking the work of adding cid.contact as an implicit default content router.

I was imaging one PR to update the HTTP delegated routing client used by Kubo (for this issue) and then another PR for the cid.contact integration (including changelog/docs - which would be against #9454). If it makes sense to do one large PR, please go ahead.

[ajnavarro]

Main integration here: #9453

[BigLep]

@guseggert and @ajnavarro : what is remaining here before this is done? Is it #9475 ?

[guseggert]

I'll defer to @lidel who is handling the config stuff. For integration of the HTTP client, I believe #9478 is the last PR.

[BigLep]

2022-12-08: just waiting on #9422 to be merged (as it also includes important docs items) and then this can be resolved.