WIP: fixing documentation in CI

[micolous]

• Move DEFAULT_AUTHENTICATOR_TIMEOUT into webauthn-rs, and make authenticator_timeout a required parameter for webauthn_rs_core::Webauthn::unsafe_experts_only.

  • Moves default timeouts into our recommended interface, so that the value of that default isn't hidden behind internal interfaces.
  • Fixes a documentation build breakage caused by Feature/configurable timeout #385.
  • Changes the default timeout from 1 minute to 5 minutes, per Webauthn-3 recommendations.
  • Adds accessibility and UX concerns to the timeout documentation.

• Add PhantomData to webauthn_authenticator_rs::stubs.

  Sometime in the last few months, has been a change in Rust Nightly which makes unused type parameters a hard error when documenting; and we rely on Nightly for doc_cfg and doc_auto_cfg on docs.rs.

Fixes #

• cargo test has been run and passes
• documentation has been updated with relevant examples (if relevant)