Create wasm JS bindings to `passkey-authenticator` and `passkey-client` libraries

[Progdrasil]

Create a series of types that holds JS Functions. These functions would map to the traits that need to be implemented for the pluggable parts of passkey-authenticator::Authenticator. This would allow the passkey library to hand off to the browser based plugin when loading or storing passkeys and come back and finish the logic it needs to do in order to be spec compliant. This pattern could also be used any eventual UI validations needed, such as user presence/verification checks or entering pin-auth.