feat(engine): Implement 'super-moderator' without destructive commands

[xVye]

I have made changes to allow for another staffModLevel (pushed dev level from 3 to 4, and keeping the default level 1 as is).
This would allow for more of a "bot busting account" without the destructive commands.

This can also be useful to help players out for various problems.

Staff mod level:

• Normal user (0) - Unaffected
• Moderator (1) - Unaffected
• Super-moderator (2) - New
• Admin (3) - Changed from 2 -> 3
• Dev (4) - Changed from 3 -> 4

Super-moderator (2) commands:

• ::mute
• ::kick
• ::ban
• ::getcoord
• ::tele
• ::teleto
• ::teleother
• ::setstat
• ::advancestat
• ::minme
• ::setvis