List contacts

curl --request GET \
  --url https://api.buildr.com/api/2023-01/contacts \
  --header 'Authorization: <authorization>'

{
  "contacts": [
    {
      "id": "144",
      "created_at": "2023-02-14T18:13:00Z",
      "updated_at": "2023-04-03T20:16:30Z",
      "email": "austin.reaves@example.com",
      "first_name": "Austin",
      "last_name": "Reaves",
      "name": "Austin Reaves",
      "job_title": "Point Guard",
      "mobile_phone": "555-555-5555",
      "office_phone": "555-555-5555 x301",
      "linked_in_profile_url": "https://www.linkedin.com/in/john-doe",
      "company": {
        "id": "101",
        "created_at": "2023-02-14T18:13:00Z",
        "updated_at": "2023-04-03T20:16:30Z",
        "name": "<string>",
        "website": "<string>"
      },
      "assigned_to": {
        "id": "953",
        "created_at": "2023-02-14T18:13:00Z",
        "updated_at": "2023-04-03T20:16:30Z",
        "first_name": "Russell",
        "last_name": "Westbrook",
        "name": "Russell Westbrook",
        "email": "russell.westbrook@example.com"
      },
      "created_by": {
        "id": "953",
        "created_at": "2023-02-14T18:13:00Z",
        "updated_at": "2023-04-03T20:16:30Z",
        "first_name": "Russell",
        "last_name": "Westbrook",
        "name": "Russell Westbrook",
        "email": "russell.westbrook@example.com"
      },
      "import": {
        "id": "456",
        "created_at": "2023-02-14T18:13:00Z",
        "updated_at": "2023-04-03T20:16:30Z",
        "name": "<string>"
      },
      "custom_fields": {}
    }
  ]
}