Add PVC support for Infinity engine and ollama engine

[MRColorR]

Infinity engine supports using a local path so maybe we could make PVC work not only for VLLM.

Also in the past I have implemented a similar solution for standalone Ollama, involving mounting a Persistent Volume Claim (PVC) within the default Ollama download directory to persist model downloads.

This approach could potentially be adapted for both Ollama and Infinity engines within the Kubeai environment.