Access Health check endpoint for each LitAPI independently

[aniketmaurya]

I want to be able to check health of each LitAPI separately

1. localhost:8000/LITAPI_NAME_1/health
2. localhost:8000/LITAPI_NAME_1/health

Originally posted by @aniketmaurya in https://github.com/Lightning-AI/LitServe/pull/604#discussion_r2334329463

[selfsff]

LitServe has multi endpoint, so you can create api for sending request to /health in other apis, that my way to resolve it, you can come up with another

[aniketmaurya]

the better DX would be to have a standard way of doing this rather using a workaround.