Add StageScatterChart component for Value Stream Analytics
What does this MR do and why?
As the first MR to address #367661 (closed), it adds a StageScatterChart component that will eventually replace the StageChart component currently used for "Stage time" in Value Stream Analytics.
References
Screenshots or screen recordings
How to set up and validate locally
yarn storybook:start- When the GitLab Storybook opens in your browser, navigate to EE > analytics > cycle_analytics > components > stage_scatter_chart
MR acceptance checklist
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Related to #367661 (closed)
Edited by Rudy Crespo
