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

Skills/@be/node_modules/join-component/index.js

@@ -0,0 +1,28 @@
+
+/**
+ * Join `arr` with the trailing `str` defaulting to "and",
+ * and `sep` string defaulting to ", ".
+ *
+ * @param {Array} arr
+ * @param {String} str
+ * @param {String} sep
+ * @return {String}
+ * @api public
+ */
+
+module.exports = function(arr, str, sep){
+  str = str || 'and';
+  sep = sep || ', ';
+
+  if (arr.length < 2) return arr[0] || '';
+
+  var oxford = str.slice(0, 2) === sep;
+
+  if (!oxford) {
+    str = ' ' + str;
+  } else if (arr.length == 2) {
+    str = str.slice(1);
+  }
+
+  return arr.slice(0, -1).join(sep) + str + ' ' + arr[arr.length - 1];
+};