Model Helpers should allow setting GraphQLRequest parameters

[dnys1]

Currently, model helpers do not allow setting GraphQLRequest parameters like apiName, authorizationMode, headers, etc. This prevents them from being used in multi-auth settings.

Current

static GraphQLRequest<T> create<T extends Model>(T model);

Expected

static GraphQLRequest<T> create<T extends Model>(
  T model, {
  String? apiName,
  APIAuthorizationType? authorizationMode,
  Map<String, String>? headers,
});

[ragingsquirrel3]

released w https://pub.dev/packages/amplify_api/versions/1.0.0-next.1+1