Hide plugin commands completely to normal players

[AndyNoob]

Is your feature request related to a problem? Please describe.
(not op-ed) Players are able to see all commands in tab completion.

Describe the solution you'd like
Hide them by specifying the permissions in each of the command nodes in plugin.yml

Describe alternatives you've considered
N/A

Additional context
I was not op-ed in this screenshot:

[httphypixelnet]

Will be fixed in the next update.