Added ESPTree header, which will handle the meta tree structure created on top of the esp/esm file buffer. Added editorconfig for column guidelines.

espReader/ESPTree.h

@@ -0,0 +1,21 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http ://mozilla.org/MPL/2.0/.
+ */
+#pragma once
+
+#include "ESPReader.h"
+
+typedef struct meta_node MetaNode;
+
+/* Meta Nodes are used for constructing a more flexible tree structure 
+ * on top of 
+ */
+struct meta_node {
+    Node n;
+    MetaNode *parent;
+    MetaNode *prev;
+    MetaNode *next;
+};
+