Pulse module

Pulses for 2 ticks, or 1 redstone tick whenever an item passes through it. The module filters what items it pulses on using the standard filter GUI.

Needs:
 - [ ] Textures
    - For the item
    - For the module
This will update every 4 ticks even when no items are passing! We don't want that. Just set tick to 4 in passesFilter and do tick-- only when tick > 0, do the redstone signal emit changes when tick gets to 0.