Add Helm-Chart for easy Kubernetes deployment

[3deep5me]

Maybe useful for Kubernetes users 😊.

[extradosages]

This is a library; it should probably be kept infrastructure agnostic. This is probably more appropriate for a project that uses llama-cpp-python.

[3deep5me]

This chart can also be used as a library or "sub-chart". That's the way I use it :). But I understand the point.