Passkeys improvements (#10318)

Refactors the Passkey implementation to include more checks and a structure that is more aligned with the official specification.
Notable changes:
- _BrowserService_ no longer does the checks by itself. A new class _BrowserPasskeysClient_ constructs the relevant objects, acting as a client. _BrowserService_ only acts as a bridge between the client and _BrowserPasskeys_ (authenticator) and calls the relevant popups for user interaction.
- A new helper class _PasskeyUtils_ includes the actual checks and parses the objects.
- _BrowserPasskeys_ is pretty much intact, but some functions have been moved to PasskeyUtils.
- Fixes Ed25519 encoding in _BrowserCBOR_.
- Adds new error messages.
- User confirmation for Passkey retrieval is also asked even if `discouraged` is used. This goes against the specification, but currently there's no other way to verify the user.
- `cross-platform` is also accepted for compatibility. This could be removed if there's a potential issue with it.
- Extension data is now handled correctly during Authentication.
- Allowed and excluded credentials are now handled correctly.
- `KPEX_PASSKEY_GENERATED_USER_ID` is renamed to `KPEX_PASSKEY_CREDENTIAL_ID`
- Adds a new option "Allow localhost with Passkeys" to Browser Integration -> Advanced tab. By default it's not allowed to access HTTP sites, but `http://localhost` can be allowed for debugging and testing purposes for local servers.
- Add tag `Passkey` to a Passkey entry, or an entry with an imported Passkey.

Fixes #10287.

src/browser/BrowserMessageBuilder.cpp

@@ -140,8 +140,22 @@ QString BrowserMessageBuilder::getErrorMessage(const int errorCode) const
         return QObject::tr("Empty public key");
     case ERROR_PASSKEYS_INVALID_URL_PROVIDED:
         return QObject::tr("Invalid URL provided");
-    case ERROR_PASSKEYS_RESIDENT_KEYS_NOT_SUPPORTED:
-        return QObject::tr("Resident Keys are not supported");
+    case ERROR_PASSKEYS_ORIGIN_NOT_ALLOWED:
+        return QObject::tr("Origin is empty or not allowed");
+    case ERROR_PASSKEYS_DOMAIN_IS_NOT_VALID:
+        return QObject::tr("Effective domain is not a valid domain");
+    case ERROR_PASSKEYS_DOMAIN_RPID_MISMATCH:
+        return QObject::tr("Origin and RP ID do not match");
+    case ERROR_PASSKEYS_NO_SUPPORTED_ALGORITHMS:
+        return QObject::tr("No supported algorithms were provided");
+    case ERROR_PASSKEYS_WAIT_FOR_LIFETIMER:
+        return QObject::tr("Wait for timer to expire");
+    case ERROR_PASSKEYS_UNKNOWN_ERROR:
+        return QObject::tr("Unknown Passkeys error");
+    case ERROR_PASSKEYS_INVALID_CHALLENGE:
+        return QObject::tr("Challenge is shorter than required minimum length");
+    case ERROR_PASSKEYS_INVALID_USER_ID:
+        return QObject::tr("user.id does not match the required length");
     default:
         return QObject::tr("Unknown error");
     }