feat: initial commit for pixel-snapping components and helpers

Modules/Settings/PageCompRegistry.qml

@@ -2,6 +2,7 @@ pragma Singleton
 
 import QtQuick
 import QtQuick.Layouts
+import ZShell.Components
 import qs.Components
 import ZShell.Config
 import qs.Modules.Settings.Common
@@ -158,7 +159,8 @@ QtObject {
 	component PlaceholderComp: Item {
 		property SettingsState sState // To avoid the warning from non-existent property
 
-		ColumnLayout {
+		SnapLayout {
+orientation: Qt.Vertical
 			anchors.centerIn: parent
 			spacing: Tokens.padding.extraSmall