Configurable Item Cooldowns

What is it?
Adds a command that allows you to change the cooldowns to several items!

Discord: https://discord.gg/vmtZQNTp9t
Have suggestions for items to add or need help with something? Message MiniGnomer or join the discord!

Items with customizable cooldowns:
- Shields
- Riptide tridents
- Ender pearls
- Golden apples
- Enchanted golden apples
Join Discord server to suggest others

Commands:
/cooldown get <item>
Returns the cooldown currently set for that item!

/cooldown default <item>
Returns the default cooldown Minecraft has set for that item!

/cooldown set <item> <amount of time in seconds>
Sets the cooldown for that item to whatever time you set! (Can be used to reduce or increase cooldowns)

Example 1:
/cooldown get trident
Returns the current cooldown set after riptiding with a trident

Example 2:
/cooldown default shield
Returns the cooldown Minecraft has set for when a shield gets disabled (which would be 5 seconds)

Example 3:
/cooldown set pearl 7
Sets the cooldown for ender pearls to 7 seconds