Add real-time collab controller for markdown

app/controllers/socket/Markdown.controller.js

@@ -0,0 +1,10 @@
+const EditorController = require('./Editor.controller')
+
+class MarkdownController extends EditorController {
+    async _get_resource(id) {
+        const Node = this.models.get('api:Node')
+        return Node.findOne({ UUID: id })
+    }
+}
+
+module.exports = exports = MarkdownController

app/routing/routers/api/v1/socket.routes.js

@@ -16,5 +16,8 @@ module.exports = exports = {
         '/code/.websocket': [
             'controller::socket:Code',
         ],
+        '/markdown/.websocket': [
+            'controller::socket:Markdown',
+        ],
     }
 }