Add some branching nodes

src/lib/nodes/ComfyGraphNode.ts

@@ -1,10 +1,24 @@
+import type { ComfyInputConfig } from "$lib/IComfyInputSlot";
 import type { SerializedPrompt } from "$lib/components/ComfyApp";
 import type ComfyWidget from "$lib/components/widgets/ComfyWidget";
 import { LGraph, LGraphNode } from "@litegraph-ts/core";
+import type { SvelteComponentDev } from "svelte/internal";
+import type { ComfyWidgetNode } from "./ComfyWidgetNodes";
+
+export type DefaultWidgetSpec = {
+    defaultWidgetNode: new (name?: string) => ComfyWidgetNode,
+    config?: ComfyInputConfig
+}
+
+export type DefaultWidgetLayout = {
+    inputs?: Record<number, DefaultWidgetSpec>,
+}
 
 export default class ComfyGraphNode extends LGraphNode {
     isBackendNode?: boolean;
 
     afterQueued?(prompt: SerializedPrompt): void;
     onExecuted?(output: any): void;
+
+    defaultWidgets?: DefaultWidgetLayout
 }