feat: AppsDock Widget on the Dankbar

- Pinnable apps independent from the main dock
- Drag & Drop support

quickshell/Common/settings/SessionSpec.js

@@ -39,6 +39,7 @@ var SPEC = {
     weatherCoordinates: { def: "40.7128,-74.0060" },
 
     pinnedApps: { def: [] },
+    barPinnedApps: { def: [] },
     dockLauncherPosition: { def: 0 },
     hiddenTrayIds: { def: [] },
     recentColors: { def: [] },