feat(examples): add sealed bidding package #2956
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Contributors' checklist...
BREAKING CHANGE: xxx
message was included in the descriptionThis package supports sealed bidding an object.
It divides the bidding process into 2 phase:
CommitHash
phase: Submit the calculated hash from dapps / realms. This hash string is combined from a secret string and the price.CommitPrice
phase: Submit the secret string and the price, compare with previous submitted hash string. If it is correct, then your price is recognized.Each phase has its own duration, and everyone can submit once per phase.
I mark this PR WIP in oder to review it again.