Issue #3354241 by mandclu: Provide new "administer autogrid settings" permission

autogrid.permissions.yml

@@ -2,3 +2,8 @@ view autogrid:
   title: 'View content autogrid'
   description: 'Allow to access content autogrid.'
   restrict access: true
+
+administer autogrid settings:
+  title: 'Administer Autogrid settings'
+  description: 'Specify the entity types for which grids will be available'
+  restrict access: true