Use default cursor icon on macro segment control hover

Previously the cursor icon would be set to Qt::SplitVCursor as those
widgets were moved into the splitter handle layout

lib/utils/cursor-shape-changer.hpp

@@ -0,0 +1,20 @@
+#pragma once
+#include <QWidget>
+
+namespace advss {
+
+class CursorShapeChanger : public QObject {
+public:
+	CursorShapeChanger(QObject *, Qt::CursorShape shape);
+
+protected:
+	bool eventFilter(QObject *o, QEvent *e) override;
+
+private:
+	Qt::CursorShape _shape;
+	std::atomic_bool _overrideActive = {false};
+};
+
+void SetCursorOnWidgetHover(QWidget *widget, Qt::CursorShape shape);
+
+} // namespace advss