Allow gang leaders to rename roles#35

Add a rename feature for gang ranks. The admin can toggle if users can change the role name.

Rename-Toggle: [boolean]
Rename:
Minimum-Char: [integer]
Maximum-Char: [integer]
Color-Change: [boolean] #Allows users to change the color of the role.
Include-Codes: [boolean] #If this is enabled, color characters will not be included in the characters.

This suggestion was migrated from old suggestions made at the Discord server.