added debug information on F10

src/widgets/helper/debugpopup.hpp

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <QWindow>
+
+namespace chatterino {
+namespace widgets {
+
+class DebugPopup : public QWidget
+{
+public:
+    DebugPopup();
+};
+
+}  // namespace widgets
+}  // namespace chatterino