Add keep alive to the embedding model config

[johnnyasantoss]

Validations

• [X] I believe this is a way to improve. I'll try to join the Continue Discord for questions
• [X] I'm not able to find an open issue that requests the same enhancement

Problem

The other model configurations allow to set the keep alive (that's really useful with Ollama) and so it would be nice to have that on the embedding model as well.

Solution

Add the keepAlive config under the embed model config