Improve styling and dependency information for Quickstart Playground's Dependency Checker

[adrastogi]

Suggested new feature or improvement

The dependency checker UI for showing missing dependencies is relatively simple. Previous mocks of this had shown more colors, icons, supplemental information about the dependencies, etc. This item tracks making those improvements.

Scenario

These improvements would apply to first-run users of Quickstart Playground and provide a better initial experience over the existing implementation.

Additional details

No response