LIN-565 Add parametrization and artifact reuse to pipeline API and DB

[yoonspark]

Summary

Expose parametrization and artifact reuse to pipeline-related APIs.

Changes

• [x] Add input_parameters and reuse_pre_computed_artifact args to pipeline-related APIs
• [x] Update existing pipeline-related tests
• [x] Update DB schema to store related metadata (so the user can replicate a pipeline with parametrization and artifact reuse)
• [x] Add tests that examine storage and retrieval of the new pipeline metadata
• [x] Raise warning when parametrizing Airflow pipeline (it cannot be supported for now)
• [ ] Update user-facing documentation involving pipelines

Testing

Test cases have been added to cover DB schema update.

Ticket(s)

• LIN-565

[yoonspark]

To facilitate the review process of the implementation work, I am making the user documentation task a separate ticket (which is already in progress and will be completed shortly).