[Feature Request]: "Show Folder" next to drop down menus.

### Is there an existing issue for this?

- [X] I have searched the existing issues and checked the recent builds/commits

### What would your feature do ?

When I was a new user. Knowing which folder to put Upscalers, Ultralytics models etc etc. Was confusing and also at times unknown since for example I was following along with a youtuber who was doing a tutorial. Told you what node to use. Put a link to a model in the description but completely glossed over where it needed to be placed. I would love an option or some toggle for users who want to use it where if there is a node that is referencing... well anything that requires a drop down where files are placed. The feature simply examines what folder that particular drop down is referenced to and pops it open so you can put the model file in there.

### Proposed workflow

Picture this... You are a new user. You are watching a youtube video about "Face Detailer" You maybe install the custom node the way the youtuber said. You downloaded the Yolo model from the link in the description. But the youtuber completely missed telling you where to actually put the file. So you add the Ultralytics node. But you are a new user and have no idea where you need to put that yolo file. So next to the dropdown for the ultralytics model dropdown is a little button to pop up the folder where those models are stored. And you can then just drag the model in there. Close the windows explorer window and go back to comfy. "Refresh" and the model shows up.

And this could work for anything where files need to be placed in specific folders. New users trying FLUX who have downloaded Clip or Unet models but have no idea where they go just click the little button and the folder pops up for them. Or they use an upscaler node and again they can pop up the folder. In essence all the feature does is look at what target folder is being referenced by that particular drop down and pops up an explorer window to that folder.

But I feel like this could be a time saver for people who have lots of experience with comfy too. If you are working in comfy and you want to try a new upscaler or something and you goto a site and download it you can then quickly goto comfy and click the pop open folder button next to the drop down and it goes straight to the folder where you just drag it out from your downloads in your browser to the folder instead of having to double click your way all the way into the folder saving you PRECIOUS time you could be spending making waifus.

### Additional information

_No response_

┆Issue is synchronized with this [Notion page](https://www.notion.so/Issue-1636-Feature-Request-Show-Folder-next-to-drop-down-menus-15f6d73d365081c48090fcaf48c77f7b) by [Unito](https://www.unito.io)