add missing src/master-route.mjs from template

src/master-route.mjs

@@ -0,0 +1,29 @@
+import { SkeletonRoute } from "./routes.mjs";
+
+/**
+ * Route holding a ordered collection of values.
+ * 
+ * @property {any[]} value
+ */
+export class MasterRoute extends SkeletonRoute {
+  constructor(path, options) {
+    super(path, options);
+    this.value = [];
+  }
+
+  propertiesFor(value)
+  {
+  }
+
+  async enter(transition, untilRoute) {
+    await super.enter(transition, untilRoute);
+
+    const values = [];
+
+    for await (const value of await this.iteratorFor(transition)) {
+      values.push(value);
+    }
+
+    this.value = values;
+  }
+}