Data Preparation and Scoring Pipelines

TODO: How to use high-level runtime functions to do so (data prepare, scoring, evaluation), same for CLI.

TODO: How to pass parameters to those pipelines from CLI.

TODO: Describe pipelines for data preparation and scoring, their structure, how they are special.

TODO: Describe how to find/use them in contrib directory.

TODO: Describe how pipeline runs look like if you have data preparation or scoring.