* add API key param to Lemonade LLM Provider and Embedding Provider
* add LEMONADE_LLM_API_KEY to .env.example
* add api key to aibitat provider
* fix api key from being sent to frontend
* fix tooltip id
* add null fallback for `apiKey`
* remove console log
* add missing api keys
---------
Co-authored-by: Timothy Carambat <rambat1010@gmail.com>