[Feature Request] Prompt Styles Import

It would be great if support for [`prompt-styles`](https://github.com/AUTOMATIC1111/stable-diffusion-webui/blob/22bcc7be428c94e9408f589966c2040187245d81/modules/api/api.py#L188) could be added to the plugin's UI. I realize that effectively the same thing can be achieved with the Prompts Library.

I maintain a large number of styles in the automatic1111 webui which I frequently use. Being able to select/append them in a similar way would greatly simplify workflows rather than needing to maintain them in 2 separate places or need to copy/paste between them.