TextFileReader

Remove Mixin and switch to fabric API events | at mixin/Server.java and mod.java
use ScheduledExecutorService instead of Timer | at mod.java
support '/FileReader Permission Get [FileName] [Player] [Global|Save]' to get read permission | at filereader.java
add read permission operation prompt for server console (will be recorded in log) | at filereader.java
support '/FileReader File Read [FileName] [Global|Save]' to get read permission or not. ' to get read permission or not | at filereader.java
support '/FileReader File Read [FileName] [Global|Save] [Player]' to show command executor | at FileIO.java