feature: Support LoRA loading for model deployments

[ApostaC]

Describe the feature

Since we already see the trend of large-scale LoRA deployment in production, it would be great for production-stack to support dynamic LoRA loading. This will allow users to efficiently apply LoRA adapters without requiring full model reloading, improving both resource utilization and deployment agility.

More specifically, we want:

• Enable dynamic loading and unloading of LoRA adapters on deployed vLLM instances.
• Support specifying LoRA adapters at runtime via API or configuration updates.
• Documentation and examples for configuring LoRA adapters in the deployment.

Why do you need this feature?

No response

Additional context

No response