theme: sweep everything that isnt using a spacing token from singleton,

add Theme.XXS

quickshell/Modules/ControlCenter/BuiltinPlugins/CupsWidget.qml

@@ -274,7 +274,7 @@ PluginComponent {
                                     }
 
                                     Column {
-                                        spacing: 2
+                                        spacing: Theme.spacingXXS
                                         Layout.alignment: Qt.AlignVCenter
                                         Layout.fillWidth: true
 

quickshell/Modules/ControlCenter/BuiltinPlugins/DisplayProfilesWidget.qml

@@ -234,7 +234,7 @@ PluginComponent {
 
     verticalBarPill: Component {
         Column {
-            spacing: 2
+            spacing: Theme.spacingXXS
             DankIcon {
                 name: "monitor"
                 color: Theme.primary

quickshell/Modules/ControlCenter/BuiltinPlugins/TailscaleWidget.qml

@@ -344,7 +344,7 @@ PluginComponent {
                                         anchors.right: parent.right
                                         anchors.top: parent.top
                                         anchors.margins: Theme.spacingS
-                                        spacing: 2
+                                        spacing: Theme.spacingXXS
 
                                         RowLayout {
                                             width: parent.width
@@ -419,7 +419,7 @@ PluginComponent {
                                         Column {
                                             visible: isExpanded
                                             width: parent.width
-                                            spacing: 2
+                                            spacing: Theme.spacingXXS
                                             topPadding: 4
 
                                             RowLayout {