[Feature] Support LMCache

### Motivation

LMDeploy has incredible throughput on smaller GPU's, it far outperforms VLLM with a much simpler setup (IMO).
Because of this it is a favourite for smaller GPU's, the kind of GPU's where offloading of KV Cache to CPU / NVMe would be beneficial.

Supporing LMCache would be great for this (and the name matches!)

https://docs.lmcache.ai/

VLLM and other inference servers already support this (or have implemented their own).

Can we get this added?

### Related resources

https://docs.vllm.ai/en/stable/examples/others/lmcache.html?h=lmcache

### Additional context

_No response_