Greetd: Add a greeter

Modules/Greetd/GreeterSurface.qml

@@ -0,0 +1,18 @@
+import QtQuick
+import Quickshell
+import Quickshell.Wayland
+import Quickshell.Services.Greetd
+
+WlSessionLockSurface {
+    id: root
+
+    required property WlSessionLock lock
+
+    color: "transparent"
+
+    GreeterContent {
+        anchors.fill: parent
+        screenName: root.screen?.name ?? ""
+        sessionLock: root.lock
+    }
+}