[litellm] Add model parameters input component

[dlqqq]

Problem

We need a new React component in the Jupyter AI settings page that allows a user to add arbitrary model parameters. Each model parameter will be a keyword argument passed to LiteLLM.

Proposed Solution

Build a <ModelParametersInput /> component, which will:

1. Show just a "Add a custom model parameter" button initially.
2. After clicking that button, there should a new input for the parameter name (e.g. temperature or api_url), parameter type (e.g. float or string), and parameter value (e.g. 0.7 or https://localhost:8989). These should appear as 3 text fields on the same line.
3. After clicking that button, there should also be a new button that says "Save Model Parameters". For now, this button can just log the JSON object of its input state to the browser console.
4. A validation error should be emitted if the user specifies a parameter value but does not specify its type or its name. If a user specifies an empty parameter value, it should be ignored entirely, regardless of the type or name inputs.
5. The "Add a model parameter" button should still show after the user clicks it once, i.e. users should be able to add any number of model parameters.

Additional context

• Stretch goal: There are some fields which are standard to all models. It would be nice to be able to define "static parameters" whose name & type are fixed. This would be useful for basic parameters like temperature: float and api_url: string. Maybe these can be shown after a user clicks a different button like "Specify API URL" above/ under "Add a custom model parameter"?

• Feel free to change the UI to your liking. I do not know the best UI for this, and what I've suggested is just my best initial guess at what should exist long-term. If you can build a better / more usable UI, please feel free to include it in your PR.

[dlqqq]

@jonahjung22 Thank you for expressing your interest to contribute! I've opened this issue for you to work on. 🤗

Can't assign you to this issue for some reason. I think GitHub only lets you add people who have contributed a PR in the past, which is silly. 🤦

[jonahjung22]

@dlqqq Thank you! I noticed this problem as well, on the other jupyter-ai-personas repo I have already contributed to, I am still unable to assign reviewers for my PRs. Maybe it has to do with granting access?

[andrii-i]

Issue assignment worked for me.

@dlqqq you have more than enough permissions to assign issues so I'm also not clear about the reason why GitHub does not let you do that. Maybe @jonahjung22 needed to comment first.

@jonahjung22 added you as a maintainer, please accept the invite in your email.