basic underpinnings for dimension blacklist/whitelist - think I've got it implemented right

Author: dshadowwolf

src/main/java/com/mcmoddev/orespawn/api/os3/DimensionList.java

@@ -0,0 +1,6 @@
+package com.mcmoddev.orespawn.api.os3;
+
+public interface DimensionList {
+	boolean match( int dimensionId );
+	void create( int[] whitelist, int[] blacklist );
+}

src/main/java/com/mcmoddev/orespawn/impl/os3/DimensionListImpl.java

@@ -0,0 +1,29 @@
+package com.mcmoddev.orespawn.impl.os3;
+
+import com.mcmoddev.orespawn.api.os3.DimensionList;
+
+import java.util.Arrays;
+import java.util.LinkedList;
+import java.util.List;
+
+public class DimensionListImpl implements DimensionList{
+	private List<Integer> whitelist;
+	private List<Integer> blacklist;
+
+	DimensionListImpl () {
+		this.whitelist = new LinkedList<> ();
+		this.blacklist = new LinkedList<> ();
+	}
+
+	@Override
+	public boolean match( int dimensionId ) {
+		return !whitelist.isEmpty () && !blacklist.contains ( dimensionId ) && whitelist.contains ( dimensionId );
+
+	}
+
+	@Override
+	public void create ( int[] whitelist, int[] blacklist ) {
+		Arrays.stream(whitelist).map( Integer::new ).forEach( this.whitelist::add );
+		Arrays.stream(blacklist).map( Integer::new ).forEach( this.blacklist::add );
+	}
+}