fix: move commands initilization from global init to local

If we call addAllCommands in initGlobalSettings, all
the readers will share the same commands and we cannot
adjust commands for a specific reader. I thus moved this
method call to Unireader:init() method.

crereader.lua

@@ -7,6 +7,7 @@ CREReader = UniReader:new{
 }
 
 function CREReader:init()
+	self:addAllCommands()
 	self:adjustCreReaderCommands()
 end