[TASK] Add the leaderboard page to the dApp

[drewstone]

iFrame and separate dApp for leaderboard

Leaderboard supports points from

• graphql server
• custom JSON

[github-actions]

This issue is stale because it has been open for 60 days with no activity.

[github-actions]

This issue was closed because it has been inactive for 14 days since being marked as stale.