Add BadCredentialsException

lib/main/exceptions/remote_exception.dart

@@ -6,6 +6,7 @@ import 'package:jmap_dart_client/jmap/core/error/method/error_method_response.da
 abstract class RemoteException with EquatableMixin implements Exception {
   static const connectError = 'Connect error';
   static const noNetworkError = 'No network error';
+  static const badCredentials = 'Bad credentials';
 
   final String? message;
   final int? code;
@@ -13,6 +14,13 @@ abstract class RemoteException with EquatableMixin implements Exception {
   const RemoteException({this.code, this.message});
 }
 
+class BadCredentialsException extends RemoteException {
+  const BadCredentialsException() : super(message: RemoteException.badCredentials);
+
+  @override
+  List<Object?> get props => [];
+}
+
 class UnknownError extends RemoteException {
   const UnknownError({int? code, String? message}) : super(code: code, message: message);