Next-Gen-CustomEnderChest

NOTE: Please use /cec convertall after install plugin if you don't want lose data player in future! (Only for old users)

• Change Bukkit Stream API to Data Component from Paper to support multi-version.

• Add some key on config.yml and lang (Please delete old file or update by yourself).

• Add /cec open permission.

• Add overflow items to keep items if player got downgrade permission.

• Fix missing key lang.

• Fix convert data from <1.21.4 to 1.21.5

• Fix new player can't open enderchest.