Scythe

• Added the ability to create/require a custom 'scythe' item, note that if this option is enabled, it will override the other tool options.
• Added command /scythe-item for this, with permissions scythe.item and scythe.item.others for if someone should be able to send the item to another player
• Config has a command cooldown, can be bypassed by having the scythe.bypass.cooldown permission

Please note that if you use the Custom Scythe item, old versions will continue to be valid even after you have updated the config. Checks are done on a tag on the item so the item cannot be faked, and old versions will remain valid. Currently the way around this for things like crates and stuff would be to use the /scythe-item <player> as a console command, but I will be trying to figure out a better solution for those things