Update describe model management API to show all model configuration options

[namannandan]

🚀 The feature

Currently, the response for the describe model API does not include all the model configuration options:

Describe model API response: https://github.com/pytorch/serve/blob/13d092c002114e5f28d92ac8ad4f21a1a56f2f1a/frontend/server/src/main/java/org/pytorch/serve/http/messages/DescribeModelResponse.java#L10-L25

Model configuration options: https://github.com/pytorch/serve/blob/13d092c002114e5f28d92ac8ad4f21a1a56f2f1a/frontend/server/src/main/java/org/pytorch/serve/wlm/Model.java#L43-L56

Update the describe model API response to include available model configuration options

Motivation, pitch

Keep describe model API response in sync with model configuration options

Alternatives

No response

Additional context

No response