feat(container/serverless): add health_check block

[nullabe]

Description

Serverless Containers now offers Custom Health check feature that allows to configure the HTTP path that the probe will listen to, the number of failures before considering the container as unhealthy and the period between health checks.

This PR aim to add the relevant TF block in containers resource configuration (as well into data block).

API Reference: https://www.scaleway.com/en/developers/api/serverless-containers/#path-containers-create-a-new-container

New or Affected Resource(s)

• scaleway_container

Terraform configuration

resource scaleway_container main {
    name = "my-container-02"
    namespace_id = scaleway_container_namespace.main.id

    health_check {
        http {
            path = "/ping"
        }
        failure_threshold = 40
        interval = "3s"
    }
}

Related issues

• serverless_containers: add custom healthchecks #2813

Notes for the reviewer(s)

• Using health_check terraform configuration to be compliant with the API.
• Acceptance tests from real calls have been created on both resource and data.
• Documentation has been updated.
• TCP probe has not been implemented in the configuration block because the API's SDK struct container.ContainerHealthCheckSpecTCPProbe is empty.

Thanks!