dominicrume/cantor8_kya_rails: step-1-mandate/daml/KyaCycle.daml

Daml contract source - dominicrume/cantor8_kya_rails/step-1-mandate/daml/KyaCycle.daml ```daml -- KyaCycle: the two legs of an OTC cycle where the desk loses its OWN money. -- -- KyaQuote defends the customer payout: a stranger cannot redirect someone -- else's deposit, and a quote cannot pay twice.