feat(Core/Opcodes): Implement CMSG_CHANNEL_MODERATE (#4021)

* Core/Opcodes: Implement CMSG_CHANNEL_MODERATE

* Cleanup, prettify

* fix build

* whitespaces

src/server/worldserver/worldserver.conf.dist

@@ -2041,6 +2041,14 @@ Channel.RestrictedLfg = 1
 
 Channel.SilentlyGMJoin = 0
 
+#    Channel.ModerationGMLevel
+#        Min GM account security level required for executing moderator in-game commands in the channels
+#        This also bypasses password prompts on joining channels which require password
+#                 0 (in-game channel moderator privileges only)
+#        Default: 1 (enabled for moderators and above)
+
+Channel.ModerationGMLevel = 1
+
 #
 #    ChatLevelReq.Channel
 #        Description: Level requirement for characters to be able to write in chat channels.