Feature Request: Copy all selected tags

[blu3nh]

Could we get an option, where when we select tags in the "All Tags" list, we can copy/export them. (And obviously keep the current sorting that was applied)

This feature is pretty convenient for a lot of reasons:
• Model testing <- since you can quick export a list of all tags that occur a certain amount of times. Which can be used for randomized testing of AI model
• Quick generation of whitelist/blacklist for use within taggui
• Applying multiple tags to multiple images fairly quickly, since you can select and copy them from the all tags area
• Exporting a convenient & curated list of tags used to train the model, for when you share your model.
• Gets rid of external scripts that are currently used to do this