put shell in subdir, and add nix package

bar/volume/VolumeCard.qml

@@ -1,50 +0,0 @@
-import QtQuick
-import QtQuick.Layouts
-import Quickshell.Widgets
-import Quickshell.Services.Pipewire
-import "../../widgets/" as Widgets
-import "../.."
-
-WrapperRectangle {
-    id: root
-    color: ShellSettings.colors["surface_container"]
-    radius: width / 2
-    margin: 6
-
-    required property PwNode node
-    property string text
-    property Component button 
-    property Component icon 
-
-    PwObjectTracker {
-        id: tracker
-        objects: [root.node]
-    }
-
-    RowLayout {
-        Widgets.MaterialSlider {
-            value: root.node.audio.volume ?? 0
-            text: root.text
-            icon: root.icon
-
-            onValueChanged: {
-                // only allow changes when the node is ready other wise you will combust
-                if (!root.node.ready)
-                    return;
-
-                root.node.audio.volume = value;
-            }
-
-            Layout.fillWidth: true
-            Layout.fillHeight: true
-        }
-
-        Loader {
-            id: buttonLoader
-            sourceComponent: root.button
-
-            Layout.preferredWidth: this.height
-            Layout.fillHeight: true
-        }
-    }
-}