[Feature]: Add groq llms

[Flecart]

Is your feature request related to a problem? Please describe.
Adding groq to possible LLMs

Describe the solution you'd like
In the LLMs page, allow a select with groq

Describe alternatives you've considered
Possible that customLLM tab is sufficient, but don't know how to make it work.

Additional context
I can implement this, but I would like some mentoring about where to modify!

[valentimarco]

You can install this plugin in the registry https://github.com/pazoff/GroqAI-Integration as GroqAI Integration!