Updated NPCBase to with NPC#getState(NPCState)

Implemented net.jitse.npclib.api.NPC#getState(NPCState) to return a boolean indicating whether a state is toggled or not.

api/src/main/java/net/jitse/npclib/internal/NPCBase.java

@@ -220,6 +220,18 @@ public abstract class NPCBase implements NPC, NPCPacketHandler {
         }
     }
 
+    @Override
+    public boolean getState(NPCState state) {
+        if (activeStates.length != 0) {
+            for (int i = 0; i < activeStates.length; i++) {
+                if (activeStates[i] == state) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+    
     @Override
     public NPC toggleState(NPCState state) {
         int inActiveStatesIndex = -1;