New working hours representation

working_hours.json

{
  "is_now_available": true,
  "days": [
    {
      "weekday": 0,
      "working_hours": [
        {
          "from": "8:00",
          "till": "13:00"
        },
        {
          "from": "14:00",
          "till": "22:00"
        }
      ]
    },
    {
      "weekday": 1,
      "working_hours": [
        {
          "from": "9:00",
          "till": "15:00"
        },
        {
          "from": "16:00",
          "till": "21:00"
        }
      ]
    },
    {
      "weekday": 2,
      "working_hours": [
        {
          "from": "9:00",
          "till": "15:00"
        },
        {
          "from": "16:00",
          "till": "21:00"
        }
      ]
    }
  ]
}