Function create_cets

pub fn create_cets(
    fund_tx_input: &TxIn,
    offer_payout_script_pubkey: &Script,
    offer_payout_serial_id: u64,
    accept_payout_script_pubkey: &Script,
    accept_payout_serial_id: u64,
    payouts: &[Payout],
    lock_time: u32,
) -> Vec<Transaction>

Create a set of contract execution transaction for each provided outcome