Remove gitmodules

Integrate api and lang into core

src/api/java/appeng/api/networking/GridNotification.java

@@ -0,0 +1,9 @@
+package appeng.api.networking;
+
+public enum GridNotification
+{
+	/**
+	 * the visible connections for this node have changed, useful for cable.
+	 */
+	ConnectionsChanged,
+}