style: Adjust ViewCube home button position

src/ViewCube.cpp

@@ -14,8 +14,8 @@ namespace
 QRect getHomeButtonRect(int widgetWidth) {
     const int viewCubeSize = 150; // logical pixels
     const int buttonSize = 24;
-    const int buttonOffsetX = 8;
-    const int buttonOffsetY = 0;
+    const int buttonOffsetX = 16;
+    const int buttonOffsetY = 16;
 
     const int viewCubeX = widgetWidth - viewCubeSize;