[feature request] Auto-delete data from players that haven't connected long time ago

[criskkky]

Implement an automatic data deletion system for players who haven't connected in a while. The JSON file configuration could resemble the following:

"DeleteOldPlayerDataPastXDays": 15

In this setup, if a player hasn't connected to the server within the specified timeframe ("X" days, set to 15 days in this example), their weapon paints data associated with the respective SteamID will be removed. This proactive measure aims to minimize the impact on the database size.