Add WorldLoader.java and WorldManager.java

plugin/src/main/java/com/alttd/cometskyblock/managers/WorldLoader.java

@@ -0,0 +1,4 @@
+package com.alttd.cometskyblock.managers;
+
+public class WorldLoader {
+}

plugin/src/main/java/com/alttd/cometskyblock/managers/WorldManager.java

@@ -0,0 +1,4 @@
+package com.alttd.cometskyblock.managers;
+
+public class WorldManager {
+}