feat(SW-200): refactored breadcrumbs fetching and added json schema to layout

lib/graphql/Fragments/Breadcrumbs/CollectionPage.graphql

@@ -0,0 +1,24 @@
+#import "../System.graphql"
+
+fragment CollectionPageBreadcrumb on CollectionPage {
+  web {
+    breadcrumbs {
+      title
+    }
+  }
+  system {
+    ...System
+  }
+  url
+}
+
+fragment CollectionPageBreadcrumbRef on CollectionPage {
+  web {
+    breadcrumbs {
+      title
+    }
+  }
+  system {
+    ...System
+  }
+}