lockscreen: add example

lockscreen/shell.qml

@@ -0,0 +1,38 @@
+import QtQuick
+import QtQuick.Controls.Basic
+import Quickshell
+import Quickshell.Wayland
+
+ShellRoot {
+	AuthContext {
+		id: authContext
+		onUnlocked: lock.locked = false
+	}
+
+	SessionLock {
+		id: lock
+		locked: true
+
+		onLockedChanged: {
+			if (!locked) Qt.quit();
+		}
+
+		SessionLockSurface {
+			// You probably want to replace this with an image.
+			color: "#303030"
+
+			// For your own sanity you should probably keep this
+			// while working on the lockscreen.
+			Button {
+				text: "Help! I misconfigured my lockscreen!"
+				onClicked: lock.locked = false
+			}
+
+			Lockscreen {
+				anchors.fill: parent
+				context: authContext
+			}
+		}
+	}
+
+}