Added ghost image for gate placement

include/GhostLabel.hpp

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <qlabel.h>
+
+class GhostLabel : public QLabel
+{
+public:
+	explicit GhostLabel(QWidget* parent) :
+		QLabel(parent)
+	{
+		setMouseTracking(true);
+	}
+
+	void mouseMoveEvent(QMouseEvent* event) override
+	{
+		// Ignore all mouse move events, who cares tbh
+		event->ignore();
+	}
+};