Urist's damage and health thing. (#10)

* Add prototype for temperature testing entity.

* Add Damageable, Destructible, Temperature. Add a prototype based on those.

* Works and cleaned up.

* Nerf

Content.Server/EntryPoint.cs

@@ -23,6 +23,10 @@ namespace Content.Server
 
             factory.Register<InteractableComponent>();
             factory.RegisterReference<InteractableComponent, IInteractableComponent>();
+
+            factory.Register<DamageableComponent>();
+            factory.Register<DestructibleComponent>();
+            factory.Register<TemperatureComponent>();
         }
     }
 }