[ADF-3968] - Create page to test Demo Shell People/Group components (#4229)

* [ADF-3962] - Create page to test Demo Shell components

* [ADF-3968] - fix ling

* [ADF-3968] - Remove unused properties

* [ADF-3968] - remove app name

* [ADF-3968] - fix PR changes requested

* [ADF-3968] - change style for preselect input value

demo-shell/resources/i18n/en.json

@@ -88,7 +88,10 @@
     "SEARCH_SERVICE_APPROACH": "Check this to disable the input property and configure using the service",
     "HEADER_DATA": "Header Data",
     "TREE_VIEW": "Tree View",
-    "ICONS": "Icons"
+    "ICONS": "Icons",
+    "PEOPLE_GROUPS_CLOUD": "People/Group Cloud",
+    "PEOPLE_CLOUD": "People Cloud Component",
+    "GROUPS_CLOUD": "Groups Cloud Component"
   },
   "TRASHCAN": {
     "ACTIONS": {
@@ -281,6 +284,11 @@
   "TASK_LIST_CLOUD_DEMO": {
     "CUSTOMIZE_FILTERS": "Customise your filter"
   },
+  "PEOPLE_GROUPS_CLOUD": {
+    "SINGLE": "Single",
+    "MULTI": "Multi",
+    "PRESELECTED_VALUE": "Preselected value"
+  },
   "ABOUT": {
     "TITLE": "Plugins",
     "TABLE_HEADERS": {