Get fees

curl --request GET \
  --url https://beta.rocketfi.io/fees

{
  "result": {
    "liquidityProviderFeeRanking": [
      [
        1,
        {
          "active": "<string>",
          "passive": "<string>"
        }
      ]
    ],
    "regularFeeLadder": [
      [
        "<string>",
        {
          "active": "<string>",
          "passive": "<string>"
        }
      ]
    ]
  }
}