Polish up Passkey interface

- Fix indentation
- Split awkward initializer into separate methods
- Rename credentials to passkeys
- Simplify authenticator registry loading
- Flatten nested errors under ActionPack::WebAuthn
- Set passkey current params only requests that use it
- Inline anemic methods
- Replace custom validation with ActiveModel::Validation
- Rename identity to holder in Passkey
- Rename credentials to passkeys in JS
- Extract framework library out of controllers
- Pass params hashes down to ActionPack
- Attempt to simplify public interface
- Push data decoding down to the classes representing the data
- Introduce has_passkeys
- Add CBOR bigint support
- Rename ActionPack::WebAuthn::Passkey to ActionPack::Passkey
- Add create_passkey_button helper
- Rename public-key to creation-options
- Add sign_in_with_passkey_button helper
- Dispatch events for the whole Passkey lifecycle
- Add ED25519 support
- Prevent crash on missing meta tag
- Validate resident key options
- Don't clobber existing ActionPack config options
- Validate cryptographic params
- Move CurrentWebAuthnRequest into ActionPack::Passkey
- Use ActiveModel::Attributes for Options objects
- Implement expiring challanges
- Add lifecycle events
- Extract param helpers into Request
- Add passkey_creation_options and passkey_request_options helpers
- Add create_passkey_challenge to make it easier to override the create method if needed
- Prefix all view helpers with passkey_
- Auto-include ActionPack::Passkey::Holder
- Make the passkey challange url configurable
- Add a reminder about Passkeys to the magic link email

app/models/passkey/authenticator.rb

@@ -0,0 +1,23 @@
+class Passkey::Authenticator < Data.define(:aaguids, :name, :icon)
+  class << self
+    def find_by_aaguid(aaguid)
+      registry[aaguid]
+    end
+
+    def registry
+      @registry ||= Hash.new.tap do |registry|
+        all.each do |authenticator|
+          authenticator.aaguids.each do |aaguid|
+            registry[aaguid] = authenticator
+          end
+        end
+      end
+    end
+
+    def all
+      Rails.application.config_for(:passkey_aaguids).each_value.map do |attrs|
+        new(aaguids: attrs[:aaguids], name: attrs[:name], icon: attrs[:icon])
+      end
+    end
+  end
+end