Dermal/Black Jumpsuit readded to HoS/Drill to Warden

Several days ago a highly controversial PR was merged which resulted in several HoS cosmetic items being removed from the game. For reference: https://github.com/tgstation/-tg-station/pull/5448

After four pages of continuing discussion on the tg forums, as well as some minor discussion on coderbus, the overwhelming opinion is to restore the removed items as they were removed for no good reason at all.

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Full list of changes

* Dermal Armour Patch and Black HoS Uniform readded to the HoS's locker
* New Drill Hat made a subtype of the Warden's Hat and moved to the Warden's locker

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Forum discussion for reference: https://tgstation13.org/phpBB/viewtopic.php?f=10&t=1792