Add Timetraveler

[GastJulia]

Timetraveler

ongoing

Tasks:

• [x] restructure code s.t. it fits tgb
• [x] implement data loading and make sure it is in correct format for Timetraveler
• [x] add preprocessing
• [x] add dirichlet distribution step
• [x] check if the relation ids still make sense
• [x] integrate test()
• [x] store and load models at correct location
• [x] compute scores for negative samples only
• [x] compute and log mrr
• [x] compute and log runtime

[JuliaGast]

done