curl --request GET \
  --url http://localhost:8000/api/v1/google-ads/ads \
  --header 'Authorization: Bearer <token>'

[
  {
    "ad_id": "<string>",
    "ad_type": "<string>",
    "headlines": [
      {
        "text": "<string>",
        "type": "<string>"
      }
    ],
    "descriptions": [
      {
        "text": "<string>",
        "type": "<string>"
      }
    ],
    "status": "<string>",
    "ad_group_id": "<string>",
    "ad_group_name": "<string>",
    "campaign_id": "<string>",
    "campaign_name": "<string>",
    "metrics": {
      "impressions": 123,
      "ctr": 123,
      "average_cpc": 123,
      "conversion_rate": 123,
      "conversions": 123,
      "cost_per_conversion": 123,
      "clicks": 123,
      "cost": 123
    },
    "final_url": "<string>"
  }
]