CIP-0381 | Adapt to Plutus bindings (#506)

* Adapt CIP to Plutus bindings

* Add dcoutts' analysis on blst library

* Include motivation for using compressed over decompressed form

Co-authored-by: Kenneth MacKenzie <[email protected]>

* Modify hash-to-curve to include DST

* Include instructions for DST > 255 bytes

* Address review comments

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Co-authored-by: Kenneth MacKenzie <[email protected]>

Author: iquerejeta