[WIP] Add AS-aware relay selection

[Mshehu5]

This PR closes #919

This PR is still a Work in progress will add more info when ready

Pull Request Checklist

Please confirm the following before requesting review:

• I have disclosed my use of
  AI
  in the body of this PR.
• I have read CONTRIBUTING.md and rebased my branch to produce hygienic commits.

[coveralls]

Coverage Report for CI Build 25344800804

Coverage decreased (-0.8%) to 84.298%

Details

• Coverage decreased (-0.8%) from the base build.
• Patch coverage: 274 uncovered changes across 5 files (760 of 1034 lines covered, 73.5%).
• 8 coverage regressions across 2 files.

Uncovered Changes

File	Changed	Covered	%
payjoin-cli/src/app/v2/asmap.rs	191	60	31.41%
payjoin-cli/src/app/v2/ohttp.rs	88	36	40.91%
payjoin-cli/src/app/config.rs	63	25	39.68%
payjoin-cli/src/app/v2/relay_selection.rs	579	549	94.82%
payjoin-cli/src/app/v2/mod.rs	113	90	79.65%

Coverage Regressions

8 previously-covered lines in 2 files lost coverage.

File	Lines Losing Coverage	Coverage
payjoin-cli/src/app/v2/ohttp.rs	7	40.57%
payjoin-cli/src/app/config.rs	1	68.14%

---

Coverage Stats

Relevant Lines:	14438
Covered Lines:	12171
Line Coverage:	84.3%
Coverage Strength:	374.0 hits per line

---

💛 - Coveralls