Merged in feat/SW-1381-new-startpage-page (pull request #1197)

feat(SW-1381): add initial start page

* feat(SW-1381): add initial start page

* fix: remove unused startpage template

remove translation key for middleware error page

* fix(SW-1381): add tracking SDK and feature flag to hide start page


Approved-by: Erik Tiekstra
Approved-by: Matilda Landström
Approved-by: Chuma Mcphoy (We Ahead)

lib/graphql/Query/ResolveEntry.graphql

@@ -76,4 +76,12 @@ query EntryByUrlBatch2($locale: String!, $url: String!) {
     }
     total
   }
+  all_start_page(where: { url: $url }, locale: $locale) {
+    items {
+      system {
+        ...System
+      }
+    }
+    total
+  }
 }