FR: Propagate Batch Size to Data Science Pipeline

[stroblme]

Is your feature request related to a problem? Please describe.
With the current setup it is not possible to pass the batch size to Optuna as the dataloader objects are being created in a different pipeline, prior to the training/ optuna pipeline.
Therefore this particular hyperparameter cannot tuned with Optuna.

Describe the solution you'd like
Create dataloader objects within the instructor and return pure data tensors from the data processing pipeline.

Describe alternatives you've considered
Create dataloader objects in a separate node and call this node in each optuna trial.

Additional context
N/A