Added basic structure and comments for Tools

Fixed lpe palette loading, added custom events

js/ToolManager.js

@@ -0,0 +1,14 @@
+const ToolManager = (() => {
+    /** What it should do
+     * 
+     * - Listen to mouse events
+     *      - Bind mouse events
+     *      - Call tool functions
+     * 
+     *  
+     */
+
+    return {
+
+    }
+})