feat: LocalAI workers

[mudler]

Problem

As we plan to extend the services provided in the Masa network, we want to have an OpenAI clone that have support for most of the functionalities, available in the network.

LocalAI (https://github.com/mudler/LocalAI) is an OpenAI alternative which is almost feature-complete, and we want to support it

Acceptance criteria

• [ ] We have support for LocalAI in the oracle as we do have for Ollama or CF workers
• [ ] We have documentation for users on how they can serve LocalAI to the Masa network

Blocked by #375 as we don't want to re-implement the OpenAI API ourselves.