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

Skills/@be/node_modules/hls.js/lib/utils/timeRanges.js

@@ -0,0 +1,18 @@
+'use strict';
+
+/**
+ *  TimeRanges to string helper
+ */
+
+var TimeRanges = {
+  toString: function toString(r) {
+    var log = '',
+        len = r.length;
+    for (var i = 0; i < len; i++) {
+      log += '[' + r.start(i).toFixed(3) + ',' + r.end(i).toFixed(3) + ']';
+    }
+    return log;
+  }
+};
+
+module.exports = TimeRanges;