The upstream libray has removed the assembly-based implementation of
keccak. We need to maintain our own library to avoid a peformance
regression.
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Co-authored-by: Felix Lange <fjl@twurst.com>
Co-authored-by: lightclient <lightclient@protonmail.com>
* fix: limit the max size of lending item extradata can be inside the trading and lending transactions
* chore: add comment for the MaxLendingExtraDataSize constant