#47- Create API endpoints that return leaderboards

[yeungadrian]

#47 Leaderboard endpoints proof of concept

• New leaderboards router
• Two endpoints /api/v1/leaderboards/create/assistant & /api/v1/leaderboards/create/prompter
• Function in prompt_repository to calculate user scores. ( Count of Messages created (not deleted) per user )

There's a couple of ways to structure the endpoints. Using this structure we could end up with: /api/v1/leaderboards/create/prompter/{timespan} ... create/combined, create/assistant /api/v1/leaderboards/evaluate/prompter/{timespan} ... evaluate/user, evaluate/combined ...