[Project] Character scoring leaderboards

[fribbels]

Could use some help with this one! More details in #dev-projects on discord

Idea: The character scorer is getting increasing amounts of traffic now - we can gather some interesting data here for a leaderboard per character

• Collects anonymized builds per scorer entry (but allow an opt-in for sharing username?)
• Rank based on a combat scenario instead of character score
• Separate tab for leaderboards, link to it from scorer & character