[llms] logging support for LLM solution

[misohu]

Context

We want to have logging support for our llm solution. We want co collect logs from the controllers (kserve-llmisvc, lws-controller) and we want to collect logs from llmisvc workloads.

What needs to get done

1. Logging solution from kserve-llmisvc
2. Logging soltion for lws-controller
3. Logging solution for llmisvc workloads
4. Extended bundle integration tests for logging solution

Definition of Done

1. Logging solution ready with tests