feat(InstancePages): save/load wide bar visibility settings

Signed-off-by: flow <flowlnlnln@gmail.com>

launcher/ui/pages/instance/ServersPage.h

@@ -42,6 +42,8 @@
 #include "ui/pages/BasePage.h"
 #include <Application.h>
 
+#include "settings/Setting.h"
+
 namespace Ui
 {
 class ServersPage;
@@ -112,5 +114,7 @@ private: // data
     Ui::ServersPage *ui = nullptr;
     ServersModel * m_model = nullptr;
     InstancePtr m_inst = nullptr;
+
+    std::shared_ptr<Setting> m_wide_bar_setting = nullptr;
 };