Combistick now uses a chain

[Zonespace27]

About the pull request

Pred combistick now uses a visible chain.

Balance ramifications:

• Someone picking up the combi (still has a do_after for non-preds mind you) will sever the chain with a message to the pred
• You can no longer yank any combi-stick regardless of if it's actually yours
• Combistick will be pulled with you when you would get more than 6 tiles from it
• You will automatically yank back a combistick that tries to get put into a container

Explain why it's good for the game

• Preventing chain weirdness while still allowing it to be recovered by marines if the pred really isn't good about holding onto the combi
• Side effect of me making the code a lot better
• Side effect of the tether effect
• Preventing chain weirdness

Changelog

🆑
add: Combisticks now use a proper chain instead of an invisible magic one.
/:cl:

[realforest2001]

Approved on the WL end.