GitLab

* Add targetRequirement annotation for Command

* Added MTL lines for other langs

* Fix TargetRequirement enum scoping

* Adjust commands to targetRequirement system

* Add translation message sugar to prevent future messages from being translated for wrong player

* Temporarily disable offline targeting on /permission and /clear

* Preliminary README cleanup

* Readme commands cleanup

* Clean up command table in README, including column shuffle
Co-authored-by: AnimeGitB <AnimeGitB@bigblueball.in>

* 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

Optimize multilingualism (using variables)

Add multilingual support

Signed-off-by: Jaida Wu <mlgmxyysd@meowcat.org>