Add GeoClue2 integration as alternative to IP location (#1856)

* feat: switch auto location in weather widget to use GeoClue2 instead of simple IP check

* nix: enable GeoClue2 service by default

* lint: fix line endings

* fix: fall back to IP location if GeoClue is not available

quickshell/Services/LocationService.qml

@@ -0,0 +1,51 @@
+pragma Singleton
+pragma ComponentBehavior: Bound
+
+import QtQuick
+import Quickshell
+import Quickshell.Io
+import qs.Common
+
+Singleton {
+    id: root
+
+    readonly property bool locationAvailable: DMSService.isConnected && (DMSService.capabilities.length === 0 || DMSService.capabilities.includes("location"))
+
+    property var latitude: 0.0
+    property var longitude: 0.0
+
+    signal locationChanged(var data)
+
+    Component.onCompleted: {
+        console.info("LocationService: Initializing...");
+        getState();
+    }
+
+    Connections {
+        target: DMSService
+
+        function onLocationStateUpdate(data) {
+            if (locationAvailable) {
+                handleStateUpdate(data);
+            }
+        }
+    }
+
+    function handleStateUpdate(data) {
+        root.latitude = data.latitude;
+        root.longitude = data.longitude;
+
+        root.locationChanged(data)
+    }
+
+    function getState() {
+        if (!locationAvailable)
+            return;
+
+        DMSService.sendRequest("location.getState", null, response => {
+            if (response.result) {
+                handleStateUpdate(response.result);
+            }
+        });
+    }
+}