feat: Add Be and tbd skill, also added Roadmap file

Skills/@be/be/node_modules/source-map/build/prefix-utils.jsm

@@ -0,0 +1,18 @@
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+/*
+ * WARNING!
+ *
+ * Do not edit this file directly, it is built from the sources at
+ * https://github.com/mozilla/source-map/
+ */
+
+Components.utils.import('resource://gre/modules/devtools/Require.jsm');
+Components.utils.import('resource://gre/modules/devtools/SourceMap.jsm');
+
+this.EXPORTED_SYMBOLS = [ "define", "runSourceMapTests" ];