Introduce visualizations to product analytics dashboard
What does this MR do and why?
This MR introduces the concept of a visualization to the product analytics frontend. There is also a related backend MR !103613 (merged) that adds support for visualization configurations. Once both have been merged we can remove these baked-in configurations in the follow-up issue Fetch dashboard configurations from the backend (#382551 - closed).
This MR also introduces the framework for data sources. These libraries will be used to run the visualizations query and transform it to a standard output. I've added the first library cube_analytics.js just to get this working, but the library does not actually contain any code. This will be added in Cube Query Rendering Widget - Line Chart (#377708 - closed).
Screenshots or screen recordings
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How to set up and validate locally
- Enable the feature flag:
echo "Feature.enable(:product_analytics_internal_preview)" | rails c. - Visit the dashboard page of any project and validate that it renders:
http://localhost:3000/gitlab-org/gitlab-shell/-/product_analytics/dashboards/
MR acceptance checklist
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I have evaluated the MR acceptance checklist for this MR.
Related to #377813 (closed)