Get public specifications about the aggregator

Example response

{
  "open_api_version": "0.1.17",
  "documentation_url": "https://mithril.network",
  "capabilities": {
    "signed_entity_types": [
      "MithrilStakeDistribution",
      "CardanoDatabase",
      "CardanoTransactions"
    ],
    "aggregate_signature_type": "Concatenation",
    "cardano_transactions_prover": {
      "max_hashes_allowed_by_request": 100
    }
  }
}