List Reserve Accounts

curl --request GET \
  --url https://api.treasuryprime.com/reserve \
  --header 'Authorization: Basic <encoded-value>'

{
  "data": [
    {
      "account_id": "acct_1234567890",
      "amount": "0.00",
      "id": "reserve_1029384756",
      "reserve_account_id": "acct_0987654321",
      "upper_limit": "100.00",
      "userdata": null
    }
  ]
}