💡 idea: Enhace prompts choice and disable {system} placeholders

[condrove10]

Description

I'd like to suggest adding a multiple choice tag box for prompts, maybe custom prompt text area (which should/could be validated in backend) and create a button that enables or disables prompts or some placeholders/elements of the prompt.

For example, I had to clone and build the plugin myself after I noticed that Groq doesn't support {system} cotext when a vision model is called. Since there was no way to disable the {system} context, I had to change the OpenAI implementation slightly to skip system messages when a file is present in the bot conversation.

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So I think allowing users to define custom prompts, disable or enable one or more prompts or even placeholders from prompts could enhance the experience.

PS: I'd like to contribute but I'm a backend developer only, so I can sort the backend implementation of the feature but can't do much for frontend.