Wicher/more dkg edits

[waamm]

Description

• Commented out fptx tests and benches, need to be ported to weighted code (@rex1fernando )
• Moved struct EncryptionKey to weighted_fptx in the process
• Got rid of duplicate ark_serialize code (noticed by @ibalajiarun )
• Slightly refactored our arkworks random point generation so it also generates affine points
• Modified vanishing_poly::from_roots() function, should be at least 10x faster now
• Doubled FFT_THRESH for the blstrs code, performs better on my M4 Max
• Wrote benches for the arkworks and blstrs SCRAPE tests
• Made functions in chunky/chunks public so they can be used in tests
• Changed chunked_elgamal::PublicParameters to be generic over a CurveGroup rather than a Pairing
• Slightly edited PVSS tests by making WeightedConfigBlstrs generic (to WeightedConfig<T>), and adding a test / benchmark case
• Renamed SubTranscript to Subtranscript
• Added batch_normalize() code to the sigma protocol... but I think we'll get rid of it again

How Has This Been Tested?

Key Areas to Review

Type of Change

• New feature
• Bug fix
• Breaking change
• Performance improvement
• Refactoring
• Dependency update
• Documentation update
• Tests

Which Components or Systems Does This Change Impact?

• Validator Node
• Full Node (API, Indexer, etc.)
• Move/Aptos Virtual Machine
• Aptos Framework
• Aptos CLI/SDK
• Developer Infrastructure
• Move Compiler
• Other (specify)

Checklist

• I have read and followed the CONTRIBUTING doc
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I identified and added all stakeholders and component owners affected by this change as reviewers
• I tested both happy and unhappy path of the functionality
• I have made corresponding changes to the documentation