Renamed all services to xxxService. Moved a couple things in Commons

Services/SystemStatsService.qml

@@ -0,0 +1,39 @@
+pragma Singleton
+
+import QtQuick
+import Qt.labs.folderlistmodel
+import Quickshell
+import Quickshell.Io
+
+Singleton {
+  id: root
+
+  // Public values
+  property real cpuUsage: 0
+  property real cpuTemp: 0
+  property real memoryUsageGb: 0
+  property real memoryUsagePer: 0
+  property real diskUsage: 0
+
+  // Background process emitting one JSON line per sample
+  Process {
+    id: reader
+    running: true
+    command: ["sh", "-c", Quickshell.shellDir + "/Bin/system-stats.sh"]
+    stdout: SplitParser {
+      onRead: function (line) {
+        try {
+          const data = JSON.parse(line)
+          root.cpuUsage = data.cpu
+          root.cpuTemp = data.cputemp
+          root.memoryUsageGb = data.memgb
+          root.memoryUsagePer = data.memper
+          root.diskUsage = data.diskper
+        } catch (e) {
+
+          // ignore malformed lines
+        }
+      }
+    }
+  }
+}