`OCKTaskController` provide method to add an `OCKOutcomeValue`

[wmalloc]

currently the API provides

    open func appendOutcomeValue(
        value: OCKOutcomeValueUnderlyingType,
        at indexPath: IndexPath,
        completion: ((Result<OCKAnyOutcome, Error>) -> Void)?) {

I create custom OCKOutcomeValue and would like a method with signature

    open func appendOutcomeValue(
        value: OCKOutcomeValue,
        at indexPath: IndexPath,
        completion: ((Result<OCKAnyOutcome, Error>) -> Void)?) {

[erik-apple]

I would recommend creating that method yourself by writing an extension in your app's code. You can reference the implementation of the existing method for guidance.