feat(settings): Added Settings Tab Autostart App (XDG Autostart) (#2535)

* feat(Autostart): add Autostart tab and application selection popup

* fix(AutoStartTab): update systemdUserDir property to use XDG_CONFIG_HOME

* fix(AutoStartTab): update autostartDir and systemdUserDir to use StandardPaths for config home

* refactor(AutoStartTab): use FileView & FolderListModel

* refactor(AutoStartTab): implement systemd override generation for autostart applications using FileView

* feat(AutoStartTab): add systemd check to determine environment and update tray icon visibility

* feat(SettingsSidebar, AutoStartTab, DesktopService): add autostart functionality and systemd checks

* feat(AutoStartTab): add hidden property support for desktop entries and toggle functionality

* feat(AutoStartTab): add initialize autostart directory and add toast if writer failed

* add(AutoStartTab): logging for scoped log tracking

---------

quickshell/Modals/Settings/SettingsContent.qml

@@ -570,5 +570,22 @@ FocusScope {
                     Qt.callLater(() => item.forceActiveFocus());
             }
         }
+
+        Loader {
+            id: autoStartLoader
+            anchors.fill: parent
+            active: root.currentIndex === 36
+            visible: active
+            focus: active
+
+            sourceComponent: AutoStartTab {
+                parentModal: root.parentModal
+            }
+
+            onActiveChanged: {
+                if (active && item)
+                    Qt.callLater(() => item.forceActiveFocus());
+            }
+        }
     }
 }