[FEATURE REQUEST] Save custom EXIF metadata

[Jonseed]

Summary

It would be cool if the SD Prompt Saver could also save other custom EXIF metadata like Title, Subject, Keywords, Tags, Artist, etc., that are often visible in systems like Windows Explorer, or read by other apps or websites like Adobe Lightroom.

Basic Example

Perhaps a parameter for Extra Metadata could be included that would accept input of JSON key-value pairs of metadata that would also be saved in the image file and/or text file. This would allow any and all custom metadata that the user wants to save in the file to be possible. Other custom nodes have done something similar like ComfyUI-SaveImageWithMetaData.

Reference Issues.

No response