shared_ptr -> std::shared_ptr

This is one of the first commits in a plan to remove all `using namespace std;` lines in the entire codebase as it is considered anti-pattern today.

Minecraft.Client/Common/UI/UIScene_FurnaceMenu.h

@@ -8,7 +8,7 @@ class InventoryMenu;
 class UIScene_FurnaceMenu : public UIScene_AbstractContainerMenu, public IUIScene_FurnaceMenu
 {
 private:
-	shared_ptr<FurnaceTileEntity> m_furnace;
+	std::shared_ptr<FurnaceTileEntity> m_furnace;
 
 public:
 	UIScene_FurnaceMenu(int iPad, void *initData, UILayer *parentLayer);