Migrate to Glicko

[kozabrada123]

This issue is made to track the state of porting Lunars to Glicko 2.0 (as a to:do):

a: Implement a basic Glicko system in rust:

• [x] Add rating deviation ϕ to database schema
• [x] 1: Computement of ancillary quantities v and Δ:
  • [x] Implement g(Φ) = 1 / sqrt(1 + 3Φ² / π²) (Divide[1,Sqrt[1+Divide[3Power[Φ,2],Power[π,2]]]]) ,
  • [x] Implement E(R, Rj, ϕj) = 1 / (1 + exp{-g(Φj) (R - Rj)}) (Divide[1,1 + exp(123)-g(40)Φj(41)(40)R - Rj(41)(125)])
  • [x] Implement v
  • [x] Implement Δ
  • [x] 2: Determine new rating volatility:
  • [x] Implement f(x)
  • [x] Implement the Regula Fasi Illinois Algorythm to determine A
  • [x] 3: Determine new ratings deviation and rating
• [x] Implement D =
• [x] Implement R =

b: Adapt the basic Glicko 2.0 system to Lunaro:

• [x] Implement the ping compensation formula somewhere - I think this is done?
• [x] Implement score properly

[kozabrada123]

Im redoing everything

[kozabrada123]

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

[kozabrada123]

All of main glicko stuff is done

[kozabrada123]

Todo now is adding ping comp and then implementing into the api

[kozabrada123]

I may have potentially fully implemented this on the rewrite branch (ebfbea4)