settings: complete re-organize and breakout

Modules/Settings/ClockTab.qml

@@ -0,0 +1,17 @@
+import QtQuick
+import qs.Common
+import qs.Widgets
+
+Column {
+    width: parent.width
+    spacing: Theme.spacingM
+
+    DankToggle {
+        text: "24-Hour Format"
+        description: "Use 24-hour time format instead of 12-hour AM/PM"
+        checked: Prefs.use24HourClock
+        onToggled: (checked) => {
+            return Prefs.setClockFormat(checked);
+        }
+    }
+}