feat: add leaderboards to canvas

[djbarnwal]

TODO

• Add leaderboard icon

Checklist:

• Covered by tests
• Ran it and it works as intended
• Reviewed the diff before requesting a review
• Checked for unhandled edge cases
• Linked the issues it closes
• Checked if the docs need to be updated
• Intend to cherry-pick into the release branch
• I'm proud of this work!

[briangregoryholmes]

Can you take a stab at removing this state when the Canvas first loads? You can reference what I did with the KPI component (getMetricsViewFromName returns an isLoading property). I think we should follow up in another PR with a refactor of how and when this validation happens.