Align nixAC to spice2x folder structure

src/spice2x/misc/clipboard.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <filesystem>
+
+namespace clipboard {
+    void copy_image(const std::filesystem::path path);
+    void copy_text(const std::string& str);
+    const std::string paste_text();
+}