List regions with GPU cluster support

curl --request GET \
  --url https://api.gcore.com/cloud/v1/ai/regions \
  --header 'Authorization: <api-key>'

{
  "count": 1,
  "results": [
    {
      "access_level": "core",
      "ai_service_endpoint": {
        "client_ids": [
          1,
          22,
          333
        ],
        "created_on": "2021-11-09T12:05:50",
        "id": 1,
        "region_id": 2,
        "service": "laas",
        "updated_at": "2022-12-10T13:06:41",
        "url": "https://example.com",
        "version": "v1.2.3"
      },
      "ai_service_endpoint_id": 6,
      "available_volume_types": [
        "standard",
        "ssd_hiiops",
        "cold"
      ],
      "available_volume_types_set": [
        "standard",
        "ssd_hiiops",
        "cold"
      ],
      "country": "LU",
      "created_on": "2019-12-31T23:59:59",
      "ddos_endpoint": {
        "client_ids": [
          1,
          22,
          333
        ],
        "created_on": "2021-11-09T12:05:50",
        "id": 1,
        "region_id": 2,
        "service": "laas",
        "updated_at": "2022-12-10T13:06:41",
        "url": "https://example.com",
        "version": "v1.2.3"
      },
      "ddos_endpoint_id": 3,
      "display_name": "Luxembourg 1",
      "endpoint_type": "public",
      "external_network_id": "c843c3e6-ef4d-4b92-8db2-e16ac05c5650",
      "has_ai": true,
      "has_ai_gpu": true,
      "has_baremetal": false,
      "has_basic_vm": false,
      "has_k8s": true,
      "has_kvm": true,
      "has_sfs": false,
      "id": 1,
      "keystone": {
        "created_on": "2019-12-31 23:59:59",
        "id": 1,
        "keystone_federated_domain_id": "2b2798cc-eb87-475e-8eab-1e711e5dbe46",
        "password": "******",
        "state": "NEW",
        "url": "https://10.100.167.20:5000/v3",
        "username": "admin"
      },
      "keystone_id": 1,
      "keystone_name": "ED-8",
      "metrics_database": {
        "host": "10.100.167.20",
        "id": 1,
        "port": 9097,
        "username": "metrics_username"
      },
      "metrics_database_id": 1,
      "novnc_proxy_url": "http://example.com:6080/",
      "serial_proxy_url": "wss://example.com:6083/",
      "spice_proxy_url": "http://example.com:6082/",
      "state": "NEW",
      "task_id": null,
      "vlan_physical_network": "br-ex",
      "zone": "EMEA"
    }
  ]
}