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/SpeciesComponent.cs

@@ -76,6 +76,11 @@ namespace Content.Server.GameObjects
             return CurrentDamageState.CanUse();
         }
 
+        bool IActionBlocker.CanThrow()
+        {
+            return CurrentDamageState.CanThrow();
+        }
+
         List<DamageThreshold> IOnDamageBehavior.GetAllDamageThresholds()
         {
             var thresholdlist = DamageTemplate.DamageThresholds;