Temporary Item (With individual timers)

What is this item?
It's a kind of item that has the ability to possess its own timer despite it getting distributed everywhere.
For the timer, it will keep going despite it being in a chest. You can only watch it go down as long as it's in a player's inventory.

Dependencies:
- PlaceholderAPI
- Math
- Server

How to configure:
- edit the default value of the item variable "itemDurationInSeconds" to decide how long it's going to last