[enhancement]: prompts library, words activator and deactivator and grouping words

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Contact Details

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### What should this feature add?

Hello, I have several ideas to add to Invokeai related to elements added through extensions in WebUI Forge. These would be the following points.

1: prompts library
Add a sort of library with a wide assortment of words in different categories. There's an extension in the WebUI Forge (I don't remember its exact name) that, in one category as an example, allows you to add words related to characters, such as gender, hair type, expressions, physique, etc. Other categories cover clothing, visual style, backgrounds, and more. I would take this into account so I can find the right word to automatically add to the positive or negative prompt.

2: words activactor and desactivator
Another thing that would be good to add is the ability to enable or disable the blocking of words in the prompt without having to delete them. This would save people from having to retype entire words for certain things,Furthermore, each time you select a word, it shows you what to do with that word, with the option to lock, unlock, and also indicate how much weight to add or remove from that word, as well as other things that I don't remember right now without having the web UI in view.

and 3: grouping words

This would also be useful for point 2, where instead of going word by word blocking and unblocking, you can group a whole series of words in such a way that it turns that series of words into a single long prompt "something that WebUi did by putting ("insert series of prompts here") at the beginning and end of the series of words"

And these are my new ideas as elements to add to Invoke. I hope you'll consider some of these three points. (By the way, if anyone uses the extensions I'm referring to and knows the name, it would be great to know, along with their GitHub link, to show the example. Thanks.)

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