Get policy gateway pricing

curl --request GET \
  --url https://api.abliteration.ai/api/policy-gateway/pricing

{
  "base_pack": {
    "id": "<string>",
    "label": "<string>",
    "tokens": 123,
    "credits": 123,
    "price_usd": 123
  },
  "tiers": [
    {
      "id": "<string>",
      "label": "<string>",
      "multiplier": 123,
      "tokens": 123,
      "credits": 123,
      "price_usd": 123,
      "equivalent_pack": {
        "id": "<string>",
        "label": "<string>",
        "multiplier": 123
      },
      "list_price_usd": 123
    }
  ],
  "currency": "<string>",
  "tokens_per_credit": 123,
  "price_per_million_tokens_usd": 123,
  "promo": {
    "active": true,
    "discount_percent": 123,
    "duration_months": 123,
    "starts_at": "<string>",
    "ends_at": "<string>",
    "applied": true
  }
}