[Suggestion] Full transaction logging

[I-Knight-I]

Slightly related to #38 - since the data was reset (fortunately our host had a backup), going back through logs to verify balances and transactions would be incredibly useful. It'd also help if a player claims they never received something they should've.

I know there's shop purchase logging and obviously it logs "Added X tokens to Y" but that doesn't actually say the exact balance of that player. Something like either a .db or .h2 file containing a full list of transactions per-player would be massively appreciated.