Dock: New "exclusive" settings to ensure no windows go below.

Modules/Dock/Dock.qml

@@ -33,6 +33,7 @@ Variants {
       screen: modelData
 
       WlrLayershell.namespace: "noctalia-dock"
+      WlrLayershell.exclusionMode: Settings.data.dock.exclusive ? ExclusionMode.Auto : ExclusionMode.Ignore
 
       readonly property bool autoHide: Settings.data.dock.autoHide
       readonly property int hideDelay: 500

Modules/SettingsPanel/Tabs/GeneralTab.qml

@@ -154,6 +154,13 @@ ColumnLayout {
       onToggled: checked => Settings.data.dock.autoHide = checked
     }
 
+    NToggle {
+      label: "Exclusive Dock"
+      description: "Ensure windows don't open underneath the Dock."
+      checked: Settings.data.dock.exclusive
+      onToggled: checked => Settings.data.dock.exclusive = checked
+    }
+
     ColumnLayout {
       spacing: Style.marginXXS * scaling
       Layout.fillWidth: true