0.1.0: Backend and Front-end refactoring, UI revamp

[matteocargnelutti]

This PR is a candidate for a v0.1.0 of WARC-GPT, which now looks like this:

Screen.Recording.2024-03-20.at.5.09.28.PM.mov

It mainly consists in:

• A code refactoring of the backend: Departing from LiteLLM, decoupling search from text completion.
• A code refactoring of the front-end: Bring some modularity through web components to make the front-end easier to edit and extend.
• A UI revamp: Focus on a more "chatbot like" UI

A few other things that were added / removed:

• Added: Streaming of text completion. Thanks to @edsu for kicking-off that work!
• Added: Ability to configure endpoint-specific rate limits
• Added: Session logs now also print in the browser's console and in an "Inspect" window
• Removed: The ability to replace RAG prompt on the fly

Many thanks in advance to @rebeccacremona who will be having a look at this PR 😄

[rebeccacremona]

Wow, this is a huge PR!

Looks good to me. I read everything through and did not spot anything; I did not try running it locally.

I left a couple very tiny suggestions, all of which can certainly be ignored.

Re: the new UI, I'll note that the streaming text and auto-scrolling is a bit too much motion for me personally... it might be nice to have an option that let a user toggle that off for a steadier experience, maybe off if the user prefers-reduced-motion? But that sounds like something that could be tacked on later; I'm not suggesting it block this PR!!

[matteocargnelutti]

Thank you so much for having a look @rebeccacremona!

it might be nice to have an option that let a user toggle that off for a steadier experience, maybe off if the user prefers-reduced-motion? But that sounds like something that could be tacked on later; I'm not suggesting it block this PR!!

Definitely worth doing: I added logic to disable auto-scroll when prefers-reduced-motion: reduce is detected.