DolphinQt: Improve TAS UI Widgets

Made Stick and IR Widgets bigger
Improved Stick and IR layouts to better utilize space
Made Stick and IR Widgets Scale at a fixed ratio when window is resized
Added Scrollbars to Stick and IR Widgets
Reduced Spinbox padding in dark style

Source/Core/DolphinQt/TAS/IRWidget.cpp

@@ -20,7 +20,7 @@ IRWidget::IRWidget(QWidget* parent) : QWidget(parent)
                 "Right click to re-center it."));
 
   // If the widget gets too small, it will get deformed.
-  setMinimumSize(QSize(64, 48));
+  setMinimumSize(QSize(128, 96));
 }
 
 void IRWidget::SetX(u16 x)