Function vault::service::execute_open_requests

pub async fn execute_open_requests(
    shutdown_tx: ShutdownSender,
    parachain_rpc: InterBtcParachain,
    vault_id_manager: VaultIdManager,
    read_only_btc_rpc: DynBitcoinCoreApi,
    num_confirmations: u32,
    payment_margin: Duration,
    auto_rbf: bool
) -> Result<(), Error>

Queries the parachain for open requests and executes them. It checks the bitcoin blockchain to see if a payment has already been made.