Added Survival Spread

Hey everyone! I added some quick and dirty Survival Mechanics that I had been toying with if you're interested in a more "dark fantasy survival" style game. These can, just like everything else, be ignored.

Includes: Strain inspired by Kevin Crawfords Worlds Without Number that includes Exposure, Illness, and Exhaustion.

Gear Degradation and Repair to give you another income drain source, and also to add options for reducing incoming damage, or increasing outgoing damage. This can also increase the tension inside the dungeon to make it more of a gamble for how far to go. Armor and Weapons degrade until they just stop being useful. Includes a new consumable: Repair kits!