add missing src/dummy-receive-endpoint.mjs from template

src/dummy-receive-endpoint.mjs

@@ -0,0 +1,32 @@
+import { Endpoint } from "./endpoint.mjs";
+
+/**
+ * Dummy endpoints are used duiring construction of the endpoint mesh.
+ *
+ */
+export class DummyReceiveEndpoint extends Endpoint {
+  /**
+   * dummy does nothing by intention
+   */
+  async receive() {}
+
+  /**
+   * @return {boolean} true
+   */
+  get isIn() {
+    return true;
+  }
+
+  get isOpen() {
+    return true;
+  }
+
+  /**
+   * Indicate whatever we are a dummy endpoint.
+   * Dummy endpoints are used duiring construction of the endpoint mesh.
+   * @return {boolean} true
+   */
+  get isDummy() {
+    return true;
+  }
+}