feat: Roll noosphere-ucan-key-support into noosphere-ucan, replace ed25519-zebra with ed25519-dalek.

[jsantell]

• Roll noosphere-ucan-key-support into noosphere-ucan under feature flags: ed25519, rsa, p256 and web-rsa
  • ed25519 enabled (indirectly) in tests, replacing the outdated did-key (pulling in an old version of ed25519-dalek with a vuln, though used only in tests).
  • Add all features in CI tests
• Replace ed25519-zebra with ed25519-dalek.
• Replace log dependency with tracing.

[github-actions[bot]]

Test flake analysis

status	platform	features	toolchain
🟡	windows-latest	test-kubo,headers	stable
🟢	ubuntu-latest	test-kubo,headers,rocksdb	stable
🟢	ubuntu-latest	test-kubo,headers	stable
🟢	macos-13	test-kubo,headers	stable
🟢	macos-13	test-kubo,headers,rocksdb	stable
🟡	ubuntu-latest	test-kubo,headers	nightly

Flake summary for windows-latest, test-kubo,headers, stable

     Summary [  53.844s] 209 tests run: 209 passed (1 flaky), 2 skipped
   FLAKY 2/5 [   5.181s] noosphere::distributed_basic gateway_publishes_and_resolves_petnames_configured_by_the_client

Flake summary for ubuntu-latest, test-kubo,headers, nightly

     Summary [  54.989s] 210 tests run: 210 passed (1 flaky), 2 skipped
   FLAKY 2/5 [  28.520s] noosphere::distributed_stress multiplayer::orb_can_render_peers_in_the_sphere_address_book