Adds IThrown, ILand interfaces. Adds dice. (#273)

* Dice, IThrown, ILand

* Adds sounds to the dice using a sound collection.

* Seed random instance better.

* Missed a ")", should compile now

Content.Server/GameObjects/EntitySystems/ActionBlockerSystem.cs

@@ -10,6 +10,8 @@ namespace Content.Server.GameObjects.EntitySystems
         bool CanInteract();
 
         bool CanUse();
+
+        bool CanThrow();
     }
 
     public class ActionBlockerSystem : EntitySystem
@@ -43,5 +45,15 @@ namespace Content.Server.GameObjects.EntitySystems
             }
             return canuse;
         }
+
+        public static bool CanThrow(IEntity entity)
+        {
+            bool canthrow = true;
+            foreach (var actionblockercomponents in entity.GetAllComponents<IActionBlocker>())
+            {
+                canthrow &= actionblockercomponents.CanThrow();
+            }
+            return canthrow;
+        }
     }
 }