Add Junctions

packages/node_modules/@node-red/nodes/core/common/05-junction.html

@@ -0,0 +1,5 @@
+<!--
+  05-junction.html
+  This file exists so that the runtime loads the Junction node into the registry,
+  but it is empty so it doesn't appear in the editor palette
+-->

packages/node_modules/@node-red/nodes/core/common/05-junction.js

@@ -0,0 +1,12 @@
+module.exports = function(RED) {
+    "use strict";
+    function JunctionNode(n) {
+        RED.nodes.createNode(this,n);
+        this.on("input",function(msg, send, done) {
+            send(msg);
+            done();
+        });
+    }
+
+    RED.nodes.registerType("junction",JunctionNode);
+}