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Storybook for PipelineGraph, stories for various DAG viz features

Description

Storybook for PipelineGraph, stories for various DAG viz features

Summary:
This diff adds a set of storybooks for the PipelineGraph and some convenience methods for quickly generating DAGs. I built this trying to reproduce https://github.com/dagster-io/dagster/issues/3798 and was unable to track it down.

I also added some error messages to the SVG components so that debugigng invalid data passed to PipelineGraph is easier and less cryptic.

Test Plan: Run storybook!

Reviewers: dish

Reviewed By: dish

Differential Revision: https://dagster.phacility.com/D7626

Details