refactor(verification): finish moving all verification methods [part 5/5]

[glevco]

Depends on #799

Motivation

This is the last PR in a 5-part series of PRs that completely move verification-related code out of the vertex model classes.

This PR moves the verification method implementations of BaseTransaction, finishing the code migration. This also allows us to remove the verify_pow() simulator patch, as it can now be customized via injected verifiers.

Acceptance Criteria

• Remove all BaseTransaction verification methods from the original model classes, moving the implementation to the VertexVerifier class.
• Move each respective verify_outputs() implementation.
• Create custom Simulator verifiers such that verify_pow() is overridden.
• Update Simulator to use the custom verifiers, removing the verify_pow() patch.

Checklist

• If you are requesting a merge into master, confirm this code is production-ready and can be included in future releases as soon as it gets merged

[codecov]

Codecov Report

Attention: 18 lines in your changes are missing coverage. Please review.

Comparison is base (deaaaf6) 84.60% compared to head (363be05) 84.57%.

❗ Current head 363be05 differs from pull request most recent head 0a78bb9. Consider uploading reports for the commit 0a78bb9 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #800      +/-   ##
==========================================
- Coverage   84.60%   84.57%   -0.03%     
==========================================
  Files         269      270       +1     
  Lines       22278    22289      +11     
  Branches     3402     3405       +3     
==========================================
+ Hits        18848    18852       +4     
- Misses       2761     2766       +5     
- Partials      669      671       +2     

Files	Coverage Δ
hathor/simulator/simulator.py	94.51% <100.00%> (-0.10%)	⬇️
hathor/stratum/stratum.py	69.32% <100.00%> (ø)
hathor/transaction/base_transaction.py	94.15% <100.00%> (-0.01%)	⬇️
hathor/transaction/block.py	94.38% <100.00%> (-0.14%)	⬇️
hathor/transaction/merge_mined_block.py	64.86% <ø> (ø)
hathor/transaction/resources/create_tx.py	92.59% <100.00%> (ø)
hathor/transaction/token_creation_tx.py	99.15% <100.00%> (ø)
hathor/transaction/transaction.py	94.76% <100.00%> (-0.16%)	⬇️
hathor/verification/block_verifier.py	100.00% <100.00%> (ø)
hathor/verification/merge_mined_block_verifier.py	100.00% <100.00%> (ø)
... and 5 more

... and 6 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

The base branch was changed.