feat: add routing filtering to delegated routing server IPIP-484

[2color]

What's in this PR

• Initial implementation of protocol filtering in the delegated routing server
• Implemented based on IPIP-484: Opt-in Filtering on Routing V1 HTTP API specs#484

[lidel]

CI is red, so only did a quick first-pass with some feedback inline

[codecov]

Codecov Report

Attention: Patch coverage is 85.18519% with 28 lines in your changes missing coverage. Please review.

Project coverage is 60.36%. Comparing base (628b0f6) to head (137d34f).
Report is 22 commits behind head on main.

Files with missing lines	Patch %	Lines
routing/http/server/filters.go	85.58%	12 Missing and 4 partials ⚠️
routing/http/server/server.go	81.25%	6 Missing and 3 partials ⚠️
routing/http/types/iter/filter.go	86.36%	2 Missing and 1 partial ⚠️

@@            Coverage Diff             @@
##             main     #671      +/-   ##
==========================================
+ Coverage   60.15%   60.36%   +0.21%     
==========================================
  Files         241      243       +2     
  Lines       30712    30889     +177     
==========================================
+ Hits        18475    18647     +172     
- Misses      10582    10587       +5     
  Partials     1655     1655              

Files with missing lines	Coverage Δ
routing/http/types/record_peer.go	83.63% <100.00%> (+2.78%)	⬆️
routing/http/types/iter/filter.go	86.36% <86.36%> (ø)
routing/http/server/server.go	72.66% <81.25%> (+0.20%)	⬆️
routing/http/server/filters.go	85.58% <85.58%> (ø)

... and 12 files with indirect coverage changes

[gammazero]

LGTM

[lidel]

Tested in updated ipfs/someguy#82 and LGTM, small suggestions inline, but I think its ok to merge once those are addressed.

[lidel]

@2color we have pretty good changelog, so not the end of the world, but in future remember to squash PRs like this, to avoid noise in main branch :) (in go repos we prefer squashes)

[2color]

Sounds good! Sorry about that. Should we disable merge and rebase commits for this repo then?

[lidel]

Afraid we need to keep it for the current release process:
https://github.com/ipfs/boxo/blob/main/RELEASE.md#release-process