add WeatherService, WeatherApplet with hover panel and lock screen widget

shell/services/WeatherService.qml

@@ -0,0 +1,42 @@
+pragma Singleton
+
+import QtQuick
+import Quickshell
+import Quickshell.Io
+import "." as S
+
+QtObject {
+    id: root
+
+    property string icon: ""
+    property string tooltip: ""
+    readonly property bool available: icon !== ""
+
+    property Process _proc: Process {
+        running: S.Modules.weather.enable
+        command: ["wttrbar"].concat(S.Modules.weather.args)
+        stdout: StdioCollector {
+            onStreamFinished: {
+                try {
+                    const data = JSON.parse(text);
+                    root.icon = data.text ?? "";
+                    root.tooltip = data.tooltip ?? "";
+                } catch (e) {
+                    root.icon = "";
+                    root.tooltip = "";
+                }
+            }
+        }
+    }
+
+    property Timer _poll: Timer {
+        interval: S.Modules.weather.interval || 3600000
+        running: S.Modules.weather.enable
+        repeat: true
+        onTriggered: root._proc.running = true
+    }
+
+    function refresh() {
+        _proc.running = true;
+    }
+}