Function init_mailbox_pdo_verification

pub fn init_mailbox_pdo_verification(
    slave_number: u32,
    mailbox_pdo_entries: &MailboxPdoEntries,
    offsets: &SlaveOffsets,
    get_reg_addr_ranges: &impl Fn(&SlaveOffsets, u16, &String) -> Vec<Range<usize>>,
) -> (Vec<Vec<Range<usize>>>, Vec<Instant>, Vec<bool>, Vec<Vec<Vec<u8>>>)

init the necessary variables for mailbox pdo verification offsets of the mailboxes data in the domain data last read timestamp of the mailbox data flag to check if the slave is responding buffer to store the mailbox data (that are read asynchronusly from the slaves)

Note: mailbox PDOs are different from the normal buffered PDOs and they are not always present