Get usage stats

curl --request GET \
  --url https://api.supermemory.ai/v3/analytics/usage \
  --header 'Authorization: Bearer <token>'

{
  "usage": [
    {
      "type": "add",
      "count": 123,
      "avgDuration": 123,
      "lastUsed": "<string>"
    }
  ],
  "hourly": [
    {
      "hour": "2023-11-07T05:31:56Z",
      "timestamp": 123,
      "count": 123,
      "avgDuration": 123
    }
  ],
  "byKey": [
    {
      "apiKeyId": "<string>",
      "keyName": "<string>",
      "count": 123,
      "lastUsed": "<string>",
      "avgDuration": 123
    }
  ],
  "pagination": {
    "currentPage": 1,
    "totalPages": 10,
    "limit": 10,
    "totalItems": 100
  }
}