Add support for the AI Horde

[db0]

AI Horde is a crowdsourced cluster of workers for text and image generation that can be used anonymously and/or free. It provides a fully documented REST API you can easily integrate to your front-end. You can also tie it into generating images for further immersion in the chat.

I am the creator, so feel free to hit me up on questions on discord.

[gobbeeuwu]

AI Horde has been shown to be unsafe to use, as real people can see the prompts that are inputted (and I know of at least one or two cases where users were "trolled" by these workers). The creator also has it out against people who like anime.

[db0]

Ever since we've prevented CSAM, random newly created accounts they've going around spreading this FUD like this.