Option to disable default commands

Checklist

• I have read and agree to the README (found on https://github.com/Minehut/Meta)
• I am NOT reporting a security vulnerability
• I have searched the Issue Tracker to make sure this is not a duplicate issue
• This issue does not contain any sensitive information

Affected Platform?

Java, Bedrock, Website

What is the feature you are requesting?

Allow server owners to disable some default Minehut commands such as /msg, /friend, etc

How is this feature useful for Minehut?

Most servers want to integrate these themself as then they can add custom formats.

Would close #1015 and #1009