Zis is ze Vampire mode! A-HA-HA-HA-HA!

I VANT TO ZUCK YOUR PACKETS! BLUH!

Ports /vg/'s port of Goon's Vampire mode. Playtested, playable and despite it being for the most part a King-sized plate of copypasta with ScrdCo Brand Hackiness Sauce (TM) (C) as condiment.

Notes:
- Once someone ports the mobs catching on fire system, there is original vg code that handles burning up in the sun properly, for now the workaround is taking 5 Burn damage per check.
- Removing powers might have Issues (TM). If you unvamp someone via player panel (or whatever), it WILL render them unable to use them, but unless my wild third attempt at fixing that somehow succeeded, the person will retain the now-useless verbs.
- Since displaying total/usable blood points as part of the HUD resulted in Bad Things Happening, I moved them to display as part of Status.
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