feat: added substitution

menu/en_menu_selfserve.json

@@ -5,14 +5,14 @@
     "children": [
         {
             "id": "home1",
-            "label": "Welcome Home",
+            "label": "Welcome {{.digital_id}}",
             "target": "_blank",
             "icon": "fa-home",
             "tenant": "",
             "children": [
                 {
                     "id": "menu-001-001",
-                    "label": "Dashboard",
+                    "label": "{{.organisation}} Dashboard",
                     "functionId": "menu-001-001",
                     "intent": "/content/dashboard.html",
                     "target": "Home",