More accessibility fixes using foobar2000 as a test.

native_items.h

@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+#pragma once
+#include <windows.h>
+#include <cstdint>
+#include <string>
+
+struct NativeItemKey {
+  uintptr_t item = 0;
+  int count = 0;
+  DWORD state = 0;
+  bool operator==(const NativeItemKey &) const = default;
+};
+struct NativeItem {
+  NativeItemKey key;
+  std::string text;
+  std::string role;
+  std::string states;
+  int position = 0;
+  int count = 0;
+};
+bool is_native_item_control(HWND window);
+NativeItemKey native_item_key(HWND window);
+NativeItem read_native_item(HWND window);