Replace bar settings with inline config panel

shell/shell.qml

@@ -651,6 +651,10 @@ ShellRoot {
       return JSON.stringify(shell.bar && shell.bar.debugBarGeometry ? shell.bar.debugBarGeometry() : [])
     }
 
+    function openBarConfig(): string {
+      return shell.bar && shell.bar.openConfigPanel && shell.bar.openConfigPanel() ? "ok" : "unknown"
+    }
+
     function summon(id: string, payloadJson: string): string {
       return shell.summon(id, payloadJson) ? "ok" : "unknown"
     }