Adds groq inference adapter.

[swanhtet1992]

What does this PR do?

This PR adds a groq inference adapter.

Key features implemented:

• Chat completion API with streaming support
• Distribution template for easy deployment

What it does not support:

• Text completion API
• Embeddings API
• Certain OpenAI features:
  • logprobs and top_logprobs
  • response_format options

Test Plan

Run the following test command:

pytest -s -v --providers inference=groq llama_stack/providers/tests/inference/ --env groq_API_KEY=<your-api-key>

To test the distribution template:

# Docker
LLAMA_STACK_PORT=5001
docker run -it -p $LLAMA_STACK_PORT:$LLAMA_STACK_PORT \
  llamastack/distribution-groq \
  --port $LLAMA_STACK_PORT \
  --env groq_API_KEY=$groq_API_KEY

# Conda
llama stack build --template groq --image-type conda
llama stack run ./run.yaml \
  --port $LLAMA_STACK_PORT \
  --env groq_API_KEY=$groq_API_KEY

Sources

• groq API Documentation

Before submitting

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Ran pre-commit to handle lint / formatting issues.
• Read the contributor guideline,
  Pull Request section
• Updated relevant documentation.
• Wrote necessary unit or integration tests.