Decrease the default ride speed
Implement the PetSelector Menu

This makes it easier for players to select Pets and perform the most
common commands for manipulating them. It also adds three new
configuration options.
Split perms for */pet ride* and */pet hat*
Fix a perm error
Refactor lang variables to 'admin' instead of 'player'
Add new Admin commands

Adds the following commands:
* /petadmin menu
* /petadmin call
* /petadmin select
* /petadmin selector
* /petadmin hide
* /petadmin show
* /petadmin menu
Move help page enums to command package