Startoad's plasma windows commit, I'm doing the github stuff for it.

This is Startoad's Plasma Windows stuff. He asked me to do the git work for it.

The old commit text is below:
"Plasma Windows! They come in basic and reinforced! Basic Plasma Windows are made from welding a Plasma Shard, or by smelting Plasma Ore and Sand in the Mining Smelter! It's got 80 HP and is fireproof up to 32k Degrees. Reinforced Plasma Windows can be made like normal R-Windows, but with Plasma Glass instead of normal glass. They have 160 HP and are infinitely fireproof. You could use these for making a visible toxins burnchamber or something! (You can also smelt it via Iron Ore, Plasma Ore, and Sand via the smelter, should you not want to waste rods.)
Also does an overhaul making it easier to add new window types without having to findangle stuff. I didn't add any plasma glass to the map; I didn't want to try and work with the mapmerge tool juuuuust yet."

https://github.com/StarToad/Baystation12/commit/3677121b51af852ed951c214c57a08fab60222c1