add newlines at the end of the file

Author: jhgaylor

example/iostream-client-server/simple.dart

@@ -53,4 +53,4 @@ Future<void> main() async {
   final availableTools = await client.listTools();
   final toolNames = availableTools.tools.map((e) => e.name);
   print("Client setup complete. Available tools: $toolNames");
-}
+}

example/iostream-client-server/withPipeHelper.dart

@@ -67,4 +67,4 @@ Future<void> main() async {
   final availableTools = await client.listTools();
   final toolNames = availableTools.tools.map((e) => e.name);
   print("Client setup complete. Available tools: $toolNames");
-}
+}