HTML form for proof of concept

[mikrl]

It would be ideal to have a simple form for the user to run a query and get a response in a web page.

Specs:

• Needs a drop-down to select a pre-existing API key from the backend
• Needs a text field to write a prompt template, and a save button to save it into the back-end
• Needs a list of text fields for each variable derived from the template. Each text field should be labelled with its variable.
• Needs a radio button to select a LLM provider (only support OpenAI Chat right now)
• Needs a button to run a query using the prompt template and API key, against the chosen provider.
• Needs a text field to display the result of the query