Add an update action buttons proc for items to clean up duplicate code

[Vi3trice]

What Does This PR Do

Mobs already have this proc, I'm defining an item level version of update_action_buttons to remove a lot of duplicated code.

The kinetic crusher also had that behind a spawn(1) for some reasons and saw no point in keeping that.

Why It's Good For The Game

It's copypasted in quite a few places and could use its own proc at this point.

Testing

Spawned in with a couple of toggleable objects. It's identical otherwise.

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Declaration

• I confirm that I either do not require pre-approval for this PR, or I have obtained such approval and have included a screenshot to demonstrate this below.

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Changelog

NPFC