[WIP] Thirsty Space Men (Adds thirst)

[deathride58]

Exactly what it says on the tin. Opening PR for easier review, feedback, etc

TODO

• Thirst variable that decreases on mob life, and decreases faster while moving
• Reagents are able to either increase or decrease thirst
• Having too little or too much thirst results in stamina being capped
• Too little/too much thirst results in direct stamina loss
• Too little/too much thirst results in confusion and vomiting, respectively
• More non-lethal thirst effects (Blurry eye effect, dizziness, jitters, seizures, etc)
• Having too little or too much thirst can be directly lethal (Maybe? Possibly?)
• Balancing
• Adjust quench_amount values for a bunch of reagents
• Grammar/wording pass
• Proper HUD sprites for thirst (Maybe? Possibly?)

[ShibberinoShipperino]

Expanded Need System:

[ShibberinoShipperino]

This is looking great so far, I personally would make dehydration kill you eventually, but I suppose that's up to Frosty. I'll work on getting you some UI sprites if you like.