Add Subgraphs (#3905)

Co-authored-by: github-actions <github-actions@github.com>

src/types/litegraph-augmentation.d.ts

@@ -60,6 +60,7 @@ declare module '@comfyorg/litegraph/dist/types/widgets' {
  *  ComfyUI extensions of litegraph
  */
 declare module '@comfyorg/litegraph' {
+  import type { ExecutableLGraphNode } from '@comfyorg/litegraph'
   import type { IBaseWidget } from '@comfyorg/litegraph/dist/types/widgets'
 
   interface LGraphNodeConstructor<T extends LGraphNode = LGraphNode> {
@@ -88,7 +89,10 @@ declare module '@comfyorg/litegraph' {
     /** @deprecated groupNode */
     setInnerNodes?(nodes: LGraphNode[]): void
     /** Originally a group node API. */
-    getInnerNodes?(): LGraphNode[]
+    getInnerNodes?(
+      nodes?: ExecutableLGraphNode[],
+      subgraphs?: WeakSet<LGraphNode>
+    ): ExecutableLGraphNode[]
     /** @deprecated groupNode */
     convertToNodes?(): LGraphNode[]
     recreate?(): Promise<LGraphNode>