Added X scrollbar to scroll area, and added toolbar for phone drawing program

src/GUIStuff/ElementHelpers/ScrollAreaHelpers.hpp

@@ -11,6 +11,7 @@ struct ScrollBarManyEntriesOptions {
     bool growing = false; // If set to false, this element has a fixed size. Otherwise, is a growing element.
     Clay_LayoutAlignmentX xAlign = CLAY_ALIGN_X_LEFT;
     Clay_SizingAxis xElementSize = CLAY_SIZING_GROW(0);
+    ScrollArea::ScrollbarType scrollbar = ScrollArea::ScrollbarType::NORMAL;
     std::function<void(size_t elementIndex)> elementContent;
     std::function<void(const ScrollArea::InnerContentParameters&)> innerContentExtraCallback;
 };