API_BASE_URL not honoured.

[SohamG]

Since additional kwargs is set to empty object, the API_BASE_URL config item is lost and not passed to the openai completion function. My use case is to use OpenRouter instead of openai.

Edit: Issue may be due to some other issue, now that I look into it, but I don't know where.

shell_gpt/sgpt/handlers/handler.py

Line 13 in 9615dfb

base_url = cfg.get("API_BASE_URL")