refactor: update schnorr implementation

[alexbarnsley]

Summary

https://app.clickup.com/t/86du3ct7y

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

[ItsANameToo]

still a couple things to adjust on this PR:

• identity fixture should use keccak address format + update WIF
• builder tests are failing on serialisation
• some remaining deserialiser tests

[ItsANameToo]

public key has an issue where it shows only 32 bytes instead of the 33 needed. Has to do with the PublicKeyXOnly implementation used

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 87.12871% with 13 lines in your changes missing coverage. Please review.

Please upload report for BASE (feat/mainsail@25c6867). Learn more about missing BASE report.

Files	Patch %	Lines
crypto/utils/message.py	78.26%	2 Missing and 3 partials ⚠️
crypto/identity/private_key.py	0.00%	3 Missing ⚠️
crypto/transactions/deserializers/vote.py	66.66%	2 Missing and 1 partial ⚠️
crypto/transactions/serializers/multi_payment.py	75.00%	0 Missing and 1 partial ⚠️
crypto/transactions/serializers/transfer.py	75.00%	0 Missing and 1 partial ⚠️

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Additional details and impacted files

@@               Coverage Diff                @@
##             feat/mainsail     #129   +/-   ##
================================================
  Coverage                 ?   67.00%           
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  Files                    ?       54           
  Lines                    ?     1000           
  Branches                 ?      105           
================================================
  Hits                     ?      670           
  Misses                   ?      302           
  Partials                 ?       28           

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