Conveyor Tunnels

This mod introduces a new item, the Conveyor Belt Tunnels.

You can craft these at the Automation Table, the cost is 4 regular conveyor belts for 2 conveyor tunnels.

These allow you to place 2 tunnels on the same row/column with the help of the assistive UI and they get paired automatically.
Sending items through the entrance of the tunnel makes it so the items travel at a similar speed as they would on a regular conveyor belt, but underground.

While underground, the items cannot be picked up, stacked, moved by other belts or interacted with in any way, unless we destroy the tunnel which makes it so the items currently inside the tunnel are being sent instantly to the other end.

A very helpful UI interaction was added, where the E key can show you the paired tunnels:
First interaction showing you the hovered tunnel's pair via the UI helper which displays the direction of the tunnel and its zone.
The second interaction (Pressing E again on a tunnel while the first pair is being shown) will make it so all the pairs are now showing their zones and directions via UI helpers, with different colors for an easier time telling them apart.
The third interaction (Pressing E a 3rd time on a tunnel) will make it so these helpers hide immediately. Otherwise, all the visuals of these interactions have a 5 seconds cooldown and will disappear on their own as soon as these 5 seconds pass.


*I will take some time at some point to rewrite this whole description, but there's not much to say about these, they work very similarly to other underground tunnels/belts from other games, so enjoy.

Oh, and they can overlap, you can cross belts with them, good luck have fun!