Endorse using [GroupCog](https://discordpy.readthedocs.io/en/latest/ext/commands/api.html#discord.ext.commands.GroupCog)s when creating modules, to reduce the amount of root level slash commands a bot running breadcord will have. This should definitely not be required which is why the issue is made here and not as a PR changing [ModuleCog](https://github.com/Breadcord/Breadcord/blob/7a0f66fce2b52ad74da79ed80f488ea319667447/breadcord/module.py#L136).
