Add counters for Energy, Hunger, Thirst, and Health

[aylusltd]

• Each starts at 100
• decrements by a configureable amount every tick
• Replenished by a specific action (eat fish, drink water, rest by campfire)
• Add water as inventory item
• Add rest as an action (bind to a key)
• Add drink as an action (bind to a key)
• Add UI Indicator Bars
• Health should tick up whenever other bars are over half full