Add App I/O selection system (#8965)

Adds a system for selecting the inputs and outputs which should be
displayed when inside linear mode. Functions only in litegraph
currently. Vue support will require a separate, larger PR.
Inputs and outputs can be re-ordered by dragging and dropping on the
side panel.

![builder_00001](https://github.com/user-attachments/assets/6345adbd-519e-455d-b71e-0020aa03c6b7)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-8965-Add-App-I-O-selection-system-30b6d73d365081569b36c1682a1fdbc5)
by [Unito](https://www.unito.io)

src/platform/workflow/validation/schemas/workflowSchema.ts

@@ -277,7 +277,13 @@ const zExtra = z
     reroutes: z.array(zReroute).optional(),
     workflowRendererVersion: zRendererType.optional(),
     BlueprintDescription: z.string().optional(),
-    BlueprintSearchAliases: z.array(z.string()).optional()
+    BlueprintSearchAliases: z.array(z.string()).optional(),
+    linearData: z
+      .object({
+        inputs: z.array(z.tuple([zNodeId, z.string()])).optional(),
+        outputs: z.array(zNodeId).optional()
+      })
+      .optional()
   })
   .passthrough()