feat(routing/http): IPIP-518: HTTP(S) URLs in Routing V1 API

[lidel]

This PR implements IPIP-518 which extends /routing/v1 with schema-agnostic support for URIs alongside multiaddrs.

Key changes:

• Add new Address type that accepts both multiaddrs (starting with /) and URIs
• Update PeerRecord and BitswapRecord to use Addresses type instead of []Multiaddr
• Implement defensive programming: unsupported addresses are skipped, not errors
• Sensible UX:
  • protocol filtering for http/https/tls matching real-world user intent (we expect https:// to be used more and more across the stack)
  • in places where only Multiaddr is returned, we turn https:// urls into /https multiaddrs
• Backward compatibility with multiaddr-only implementations which currently depend on /https multiaddrs

The implementation is not limited to https://, is schema-agnostic, accepting any valid URI scheme for future extensibility. URLs are preserved as-is without lossy conversion to multiaddrs, avoiding historical conversion issues documented in the IPIP.

IPIP:

• https://github.com/ipfs/specs/pull/518

TODO

• [ ] no objections in https://github.com/ipfs/specs/pull/518
• [ ] PR in someguy that uses this PR and tests there pass green

[codecov[bot]]

Codecov Report

:x: Patch coverage is 79.83871% with 50 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 60.85%. Comparing base (0f1ebac) to head (c9ac579). :warning: Report is 18 commits behind head on main.

Files with missing lines	Patch %	Lines
routing/http/types/address.go	81.59%	31 Missing and 6 partials :warning:
routing/http/contentrouter/contentrouter.go	33.33%	8 Missing :warning:
routing/http/filters/filters.go	81.48%	4 Missing and 1 partial :warning:

@@            Coverage Diff             @@
##             main    #1051      +/-   ##
==========================================
+ Coverage   60.75%   60.85%   +0.09%     
==========================================
  Files         268      269       +1     
  Lines       33593    33805     +212     
==========================================
+ Hits        20411    20572     +161     
- Misses      11510    11554      +44     
- Partials     1672     1679       +7     

Files with missing lines	Coverage Δ
routing/http/client/client.go	74.82% <100.00%> (+0.05%)	:arrow_up:
routing/http/server/server.go	74.22% <100.00%> (+0.05%)	:arrow_up:
routing/http/types/record_bitswap.go	40.69% <ø> (ø)
routing/http/types/record_peer.go	83.63% <100.00%> (ø)
routing/http/filters/filters.go	79.59% <81.48%> (-3.05%)	:arrow_down:
routing/http/contentrouter/contentrouter.go	50.00% <33.33%> (-0.57%)	:arrow_down:
routing/http/types/address.go	81.59% <81.59%> (ø)

... and 9 files with indirect coverage changes

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[gammazero]

Triage: Consider updating IPIP to suggest different peer schema. Blocked waiting for more progress in buoy to determine what is needed here.

Note: Should not assume trustless gateway when HTTP URI with no metadata