Add authority router

[CathalMullan]

Should be relatively straightforward, just a clone of the path router, but "." instead of "/" as the delimiter. No optional groups. Different parser, etc.

[codecov]

Codecov Report

Attention: Patch coverage is 50.70225% with 351 lines in your changes missing coverage. Please review.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
src/router/authority/state.rs	0.00%	156 Missing ⚠️
src/router/authority/display.rs	0.00%	67 Missing ⚠️
src/router/authority/errors/delete.rs	0.00%	30 Missing ⚠️
src/router/authority.rs	0.00%	29 Missing ⚠️
src/router/authority/errors/constraint.rs	0.00%	22 Missing ⚠️
src/router/authority/errors/insert.rs	0.00%	16 Missing ⚠️
src/router/authority/id.rs	0.00%	9 Missing ⚠️
src/router/authority/node.rs	0.00%	9 Missing ⚠️
src/router/authority/errors/search.rs	0.00%	8 Missing ⚠️
src/router/authority/errors/template.rs	98.63%	5 Missing ⚠️

Files with missing lines	Coverage Δ
src/lib.rs	67.79% <ø> (ø)
src/router.rs	88.88% <ø> (ø)
src/router/path/errors/delete.rs	86.66% <ø> (+10.19%)	⬆️
src/router/authority/errors/template.rs	98.63% <98.63%> (ø)
src/router/authority/errors/search.rs	0.00% <0.00%> (ø)
src/router/authority/id.rs	0.00% <0.00%> (ø)
src/router/authority/node.rs	0.00% <0.00%> (ø)
src/router/authority/errors/insert.rs	0.00% <0.00%> (ø)
src/router/authority/errors/constraint.rs	0.00% <0.00%> (ø)
src/router/authority.rs	0.00% <0.00%> (ø)
... and 3 more

[codspeed-hq]

CodSpeed Performance Report

Merging #221 will not alter performance

_{Comparing 11-investigate-authority-routing (781b1c9) with main (227aa6f)}

Summary

✅ 19 untouched benchmarks