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/Components/Mobs/DamageStates.cs

@@ -46,6 +46,11 @@ namespace Content.Server.GameObjects
         {
             return true;
         }
+
+        bool IActionBlocker.CanThrow()
+        {
+            return true;
+        }
     }
 
     /// <summary>
@@ -77,6 +82,11 @@ namespace Content.Server.GameObjects
         {
             return false;
         }
+
+        bool IActionBlocker.CanThrow()
+        {
+            return false;
+        }
     }
 
     /// <summary>
@@ -118,5 +128,10 @@ namespace Content.Server.GameObjects
         {
             return false;
         }
+
+        bool IActionBlocker.CanThrow()
+        {
+            return false;
+        }
     }
 }