[flytekit-java] Add typed transform inputs

[andresgomezfrr]

Motivation: Why do you think this is important?

This feature allows the users to know the specific inputs from a task at development time. This is really important when you are working with a remote task that is developed by other users.

Goal: What should the final outcome look like, ideally?

The final goal is to use the input class in the WorkflowBuilder instead of passing the input into the SdkTransform using the withInput(...) method that forces you to know the attribute names of the input class.

Example

previous way

    SdkNode<SumTask.SumOutput> sumNode =
        builder.apply("fib-3", new SumTask().withInput("fib1", fib1).withInput("fib2", fib2));

new way

    SdkNode<SumTask.SumOutput> sumNode =
        builder.apply("fib-3", new SumTask(), SumTask.SumInput.create(fib1, fib2));

Describe alternatives you've considered

None

Propose: Link/Inline OR Additional context

flyteorg/flytekit-java#175

Are you sure this issue hasn't been raised already?

• Yes

Have you read the Code of Conduct?

• Yes

[andresgomezfrr]

PR: flyteorg/flytekit-java#177
PR: flyteorg/flytekit-java#175