Adds the Ancient Hardsuit.

Sprites scavenged from the old /tg/station forums. A hardsuit from the
year 2301, which slows down the user but provides more protection.
Designed to be found as loot in space.
Fixes the protection values on the antique helmet.

I am dumb, and forgot to increase the protection values on the helmet.
Durr.
Adds in-hand sprites, made by me.

See title.
Merge pull request #402 from MrSnapwalk/ancienthardsuit

Adds the Ancient Hardsuit.