Expand Hopper BlockState API

[Fusezion]

Is your feature request related to a problem?

Hoppers have an nbt tag TransferCooldown which is the amount of ticks left between item transfers. There's a spigot config setting to change the default behavior but no provided method to change it within the bukkit api.

Describe the solution you'd like.

Expand the existing Hopper blockstate class to include a Hopper#setTransferCooldown(int) and Hopper#getTransferCooldown()

Describe alternatives you've considered.

I've only been able to achieve this currently by changing the nbt tag manually, which is not a very efficient method in larger scales

Other

No response