Migrate Spigot 1.14 to 1.16.4 to Generic chunk management (code reduce)

Author: mikeprimm

bukkit-helper-114-1/src/main/java/org/dynmap/bukkit/helper/v114_1/BukkitVersionHelperSpigot114_1.java

@@ -159,7 +159,7 @@ public void initializeBlockStates() {
      */
     @Override
     public MapChunkCache getChunkCache(BukkitWorld dw, List<DynmapChunk> chunks) {
-        MapChunkCache114_1 c = new MapChunkCache114_1();
+        MapChunkCache114_1 c = new MapChunkCache114_1(gencache);
         c.setChunks(dw, chunks);
         return c;
     }
@@ -222,5 +222,9 @@ public String[] getBiomeNames() {
         }
         return biomenames;
 	}
+	@Override
+    public boolean useGenericCache() {
+    	return true;
+    }
 
 }