* Fix the following issues:
1. HashMap non-thread-safe issus
2. Fix the same problem in pr621, but use a better implementation
Add the following functions:
1. There is now a language cache inside getLanguage to prepare for different languages corresponding to different time zones where the accounts in the server are located
* add /language command,each account has their own Locate
I merged ClearArtifactsCommand and ClearWeaponsCommand to ClearCommand with UID parameter. Still no send from console cuz I forgor 💀
Usage: /clear <wp | art | mat | all> [uid]