Adds a layer manifold on every gas outlets for every atmos + Boxstation atmos QoL change

[Hardly3D]

About The Pull Request

This PR replaces one of the pipes for the outlets with a layer manifold, allowing for easier collection of gas or side projects for when the pure pipe is already being used.

Additionally changes Boxstation's atmos so the waste is a bit more cleaner and consistent while the incinerator is connected to the pure pipes, also changing the incinerator's pipe colors to black instead of purple for the sake of consistency.

Why It's Good For The Game

I believe that layer manifolds would be a big quality of life for newer and experienced atmos techs alike, giving techs room to easily do multiple projects such as producing other type of gasses while the pure pipe is already being used for the incinerator and so on, additionally, atmosians already tend to replace the pipes with layer manifolds but it's really clunky and time consuming.

As for Box, their atmos waste piping were a bit spaghetti and this PR makes them a bit more bearable while adding easier access to the incinerator through the pure pipeline which every other map has.

Testing Photographs and Procedure

All maps were tested to ensure there isn't anything unexpected happening to the pipes, it's highly unlikely it'll do anything funny like putting plasma into the distro but a testmerge may still be needed for feedback and stuff.

Screenshots&Videos

Put screenshots and videos here with an empty line between the screenshots and the <details> tags.

Boxstation

Metastation

Deltastation

Kilostation

Radstation

Flandstation

Corgstation

No echo since it isn't merged (yet)

Changelog

:cl: Hardly qol: All atmos gas outlets now have a layer manifold on them, allowing for easier side projects and such. qol: Boxstation's atmos has slightly changed, now with easy access to the incinerator through the pure pipeline. tweak: Removes a bit of spaghetti pipe on Boxstation's atmos waste a tiny bit /:cl:

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[github-actions[bot]]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

[Hardly3D]

Not sure why this didn't work at first but now this should do