Get required inputs for batch generation

curl --request GET \
  --url https://app.gomangrove.com/api/v1/ledgers/{ledger_id}/required_inputs \
  --header 'Authorization: <api-key>'

{
  "data": [
    {
      "id": 1,
      "name": "Mass of Feedstock Delivery",
      "slug": "feedstock-delivery-mass",
      "unit": "U.S. ton",
      "value_type": "number",
      "category": "input",
      "subcategory": null,
      "is_manual_select": false,
      "allocation_groups": [],
      "output_of_ledgers": []
    },
    {
      "id": 2,
      "name": "Grid Emission Factor",
      "slug": "grid-emission-factor",
      "unit": "tCO2e/MWh",
      "value_type": "number",
      "category": "input",
      "subcategory": null,
      "is_manual_select": true,
      "allocation_groups": [],
      "output_of_ledgers": [
        {
          "id": "lgr_xyz789",
          "name": "Emission Factors Ledger"
        }
      ]
    }
  ]
}