Add prefix to bitcoincash cashaddr addresses that don't include `bitcoincash:` prefix

[kaladinlight]

Overview

Blockbook doesn't understand cashaddr addresses without the bitcoincash: prefix, add if not provided as part of the address

References and additional details

https://github.com/shapeshift/unchained/blob/develop/node/coinstacks/bitcoincash/api/src/controller.ts

Acceptance Criteria

• prefix q addresses with bitcoincash

Need By Date

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Screenshots/Mockups

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Estimated effort

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