[PR] Fluid piping 2, lets do this again

[Chomusuke]

First of all the idea is sick and the sprites look amazing!

I have a couple of questions:

1. Are the pipes different then atmos pipes and can they exist on the same tile / pass over one another?
2. Can we super heat / cool chems with the gas or vice versa using the atmos heat exchange pipe?
3. How do they behave in terms of volume and pressure? Like can they realistically burst like atmos pipes can?

One "issue" I have with this is that the see through parts seem to cost one unit more.
Unless they have some more balance aspects to them Id like to have them be the same cost for the sole reason of: "its cool to see shit in there" .

Overall I am excited to see and make horrible station wide disasters we can do with this .