Add Subgraph Blueprints to Bookmarks

### Feature Idea

So far I'm a big huge of subgraphs! However, it would be so much more convenient to be able to add them as a bookmark so they appear at the top of the list of nodes.

Thanks.

### Existing Solutions

_No response_

### Other

_No response_

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*This issue is transferred from: https://github.com/comfyanonymous/ComfyUI/issues/11295*

Original issue was created by @rarens at 2025-12-12T19:14:40.000Z

┆Issue is synchronized with this [Notion page](https://www.notion.so/Issue-7429-Add-Subgraph-Blueprints-to-Bookmarks-2c86d73d365081bba786f801580ee0fe) by [Unito](https://www.unito.io)