Integrate Groq API for chunk-based transcription

[mohi-devhub]

Scope:

• Upload compressed chunks to Groq API
• Handle API errors and rate limits
• Store transcripts per chunk
• Keep implementation stateless per chunk

Explicit constraints:

• Free tier only
• No local STT inference

[kunalpatil-18]

Hi @mohi-devhub, I'd like to take this up. I have experience with the Groq Python SDK and handling rate limits. I can implement the chunk upload loop with error handling for the Free Tier constraints.