CE-2875: Fetch host status in a separate endpoint

A new endpoint has been added, [GET] /hosts/{host_id}/status (Hosts.findHostStatus), which queries the host status information and can be used to asynchronously query the host's status.

The response schema is:

{
  "assigned": true,
  "status": "AVAILABLE",
  "alerts": [
    {
      "type": "ERROR",
      "message": "string",
      "link": "string"
    }
  ]
}

For simplicity, I have wrapped these fields into DTO in the host detail response (Hosts.findHostWithStatusById) as well, so its response schema has changed to this:

{
  "netBoxHost": {
    "id": 0,
    "fqdn": "string",
    "name": "string",
    "scope": "string",
    "description": "string",
    "network": "string",
    "deviceType": "string",
    "tags": [
      "string"
    ],
    "hostId": "string",
    "vm": true
  },
  "status": {
    "assigned": true,
    "status": "AVAILABLE",
    "alerts": [
      {
        "type": "ERROR",
        "message": "string",
        "link": "string"
      }
    ]
  }
}

Closes CE-2875