Add sale id to the event metadata from the sale asset sc

[ranadewall]

Summary

Add the id of the sale to the events produced for the create/cancel/complete sale actions in the asset sale smart contract

Problem Definition

It would be helpful to tie the events to sale data persisted off chain.

Proposal

Add an additional attribute for the id of the sale to the metadata of the events.

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[ranadewall]

Fixed with https://github.com/FigureTechnologies/digital-currency-consortium/pull/128