Create a report map

curl --request POST \
  --url https://app.gomangrove.com/api/v1/projects/{project_id}/report_maps \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "report_map": {
    "external_reference": "rvt_1JPAZ9BWZSBXTBXS",
    "quantification_methodology": "Biomass Geological Storage",
    "external_reference_metadata": {
      "name": "Biomass Geological Storage"
    }
  }
}
'