Function cuprate_consensus_rules::transactions::check_decoy_info

pub fn check_decoy_info(
    decoy_info: &DecoyInfo,
    hf: &HardFork,
) -> Result<(), TransactionError>

Checks the decoys are allowed.

ref: https://monero-book.cuprate.org/consensus_rules/transactions/inputs.html#minimum-decoys && https://monero-book.cuprate.org/consensus_rules/transactions/inputs.html#equal-number-of-decoys