Unify config into shell.json and add Noctalia plugin support

default/quickshell/omarchy-shell/Widgets/NButton.qml

@@ -0,0 +1,26 @@
+import QtQuick
+import QtQuick.Controls
+import qs.Commons
+
+Button {
+  id: root
+  property string label: ""
+  property color colorBg: Color.mSurfaceVariant
+  property color colorFg: Color.mOnSurface
+
+  text: label || ""
+  background: Rectangle {
+    color: root.hovered ? Color.mHover : root.colorBg
+    radius: Style.radiusM
+    border.color: Color.mOutline
+    border.width: Style.borderS
+  }
+  contentItem: Text {
+    text: root.text
+    color: root.colorFg
+    font.family: "JetBrainsMono Nerd Font"
+    font.pixelSize: Style.fontSizeM
+    horizontalAlignment: Text.AlignHCenter
+    verticalAlignment: Text.AlignVCenter
+  }
+}