Show opened workflows as topbar tabs (#952)

* Basic tab switching

* Closing tabs

* Style buttons

* wip

* Fix scroll style

* Add setting

* Add playwright test

* Add unsaved status

* nit

src/types/apiTypes.ts

@@ -500,6 +500,7 @@ const zSettings = z.record(z.any()).and(
       'Comfy.Queue.ImageFit': z.enum(['contain', 'cover']),
       'Comfy.Workflow.ModelDownload.AllowedSources': z.array(z.string()),
       'Comfy.Workflow.ModelDownload.AllowedSuffixes': z.array(z.string()),
+      'Comfy.Workflow.WorkflowTabsPosition': z.enum(['Sidebar', 'Topbar']),
       'Comfy.Node.DoubleClickTitleToEdit': z.boolean(),
       'Comfy.Window.UnloadConfirmation': z.boolean(),
       'Comfy.NodeBadge.NodeSourceBadgeMode': zNodeBadgeMode,