FEATURE: Create function to check if SMD service is ready through /service/ready endpoint

[Masber]

Introduction

it would be good to have an integration of the service health endpoints for relevant CSM/OpenCHAMI services into mesa.
This ticket is to create a service health check for the SMD/HSM service https://github.com/Cray-HPE/hms-smd . The goal is to create a function in mesa under mesa::hsm module (https://github.com/eth-cscs/mesa/blob/main/src/hsm.rs).
This code could be reused for OpenCHAMI if we decide to adapt mesa to it in the future.

How to implement (suggestion)

create a new Rust module mesa::hsm::service and create a function inside called ready the function signature could be something like pub fn async ready() -> Result<bool, Error>. This function should return the return message from the API like the example below:

# curl -s -H "Authorization: Bearer $TOKEN" https://api-gw-service-nmn.local/apis/smd/hsm/v2/service/ready | jq
{
  "code": 0,
  "message": "HSM is healthy"
}

A reference/example to create a http request against a CSM endpoint can be found in https://github.com/eth-cscs/mesa/blob/main/src/cfs/configuration/shasta/http_client.rs#L12