[Enhancement] Support more Action types in ML Extensibility Framework

[Zhangxunmt]

Typically Remote model server support multiple APIs like remote inference, healthy check, or training, etc. Currently in Ml-commons we only support the "predict" API which maps to the "remote inference" in the remote model servers. We should add more APIs in Ml-Commons and map the new APIs to invoke remote servers for other actions like "health check", "training", etc.

[austintlee]

I'm not familiar with "health check". Can you give an example? Maybe using OpenAI or SageMaker?

[Zhangxunmt]

For example, this is health check API in pytorch https://pytorch.org/serve/inference_api.html. Other platforms has similar APIs like model status, model meta, etc.

[mingshl]

will have progress when the batch inference project gets in progress

[Zhangxunmt]

This is a similar issue with https://github.com/opensearch-project/ml-commons/issues/2488 and https://github.com/opensearch-project/ml-commons/issues/2484. Closing this one as these two new issues have more details.