feat(freight:backoffice): added basic frontend integration with auth(login) page

apps/edr-freight-web/backoffice/src/pages/documents/DocumentsPage.tsx

@@ -0,0 +1,12 @@
+import FeaturePlaceholder from "@/components/FeaturePlaceholder";
+
+const DocumentsPage = () => {
+  return (
+    <FeaturePlaceholder
+      title="Documents"
+      description="Manage internal freight documents, approvals, and operational record keeping."
+    />
+  );
+};
+
+export default DocumentsPage;