very, very simple WP with midi CC out

include/libremidi/backends/emscripten/helpers.hpp

@@ -0,0 +1,17 @@
+#pragma once
+#include <libremidi/config.hpp>
+
+#include <string>
+
+namespace libremidi
+{
+namespace webmidi_helpers
+{
+struct device_information
+{
+  std::string id;
+  std::string name;
+  bool connected{};
+};
+}
+}