Made duplicate ID handling more efficient

Shouldn't create a new objectId each server run, by using a duplicateId
database that takes other things (such as planetcrc, templatecrc,
building, container, cell, coordinates)

Currently best solution I can see that doesn't consume a brand new lot
of 20,000 objectids each bootup.

src/services/object/DuplicateId.java

@@ -0,0 +1,26 @@
+package services.object;
+
+import com.sleepycat.persist.model.Entity;
+import com.sleepycat.persist.model.PrimaryKey;
+
+@Entity
+public class DuplicateId {
+	
+	@PrimaryKey
+	private String key;
+	private long objectId;
+	
+	public DuplicateId(String key, long objectId) {
+		this.key = key;
+		this.objectId = objectId;
+	}
+	
+	public DuplicateId() {
+		
+	}
+	
+	public long getObjectId() {
+		return objectId;
+	}
+	
+}