connect #417
fix: cleanup code for embedding length clarify resolves #388
* feature: add localAi as embedding provider * chore: add LocalAI image * chore: add localai embedding examples to docker .env.example * update setting env pull models from localai API * update comments on embedder Dont show cost estimation on UI --------- Co-authored-by: timothycarambat <rambat1010@gmail.com>