Add the overdraw

Overdraw renders LODs on top of vanilla chunks based with  three different settings.

src/main/java/com/seibel/lod/enums/VanillaOverdraw.java

@@ -0,0 +1,23 @@
+package com.seibel.lod.enums;
+
+/** 
+ * None, Half, Always
+ * 
+ * <p>
+ * This represents how far the LODs should overlap with
+ * the vanilla Minecraft terrain.
+ * 
+ * @author James Seibel
+ * @version 10-10-2021
+ */
+public enum VanillaOverdraw
+{
+	/** Never draw LODs where a minecraft chunk could be. */
+	NEVER,
+	
+	/** Draw LODs over the farther minecraft chunks. */
+	HALF,
+	
+	/** Draw LODs over all minecraft chunks. */
+	ALWAYS,
+}