[PORT] Navigate verb now indicates areas above or below you

[Absolucy]

About The Pull Request

Ports tgstation/tgstation#88505

Opening the nav verb now shows you Chapel (Above) or Bridge (Below) for destinations on separate levels of multi-z maps.

Selecting these verbs will simply take you to the nearest staircase or ladder, as with Nearest Way Up/Down.

Why It's Good For The Game

Sometimes, I use the navigate verb to find somewhere on a multi-z map, only to note there is no destination for it.

This means I either have to intuit
A. there is no marker for the place I want to go
or
B. it's on another z level

Going out of my way to change level to confirm this is annoying, so, why not cut out the middle man and have navigate show all destinations - even ones on a separate z level?

Changelog

🆑 Absolucy, Melbert
qol: Navigate verb better indicates areas on a separate level. Selecting an area on a different level will direct you to the nearest staircase (as with "Nearest Way Up/Down")
qol: Navigating to a staircase or ladder will shorten the cooldown of navigate and clear your existing path for you upon finding it
/:cl: