refactor(verification): remove TransactionVerifier inheritance [part 5/9]

[glevco]

Depends on #833

Motivation

Simplify transaction verification by removing the TransactionVerifier inheritance from TokenCreationTransactionVerifier, as it was not necessary. It's changed to composition instead, but this is also going to be removed in a next PR.

For more info, read the previous PR (#833).

Acceptance Criteria

• Move verify_basic(), verify(), and verify_without_storage() from TransactionVerifier to VerificationService.
• Move verify() from TokenCreationTransactionVerifier to VerificationService, removing its TransactionVerifier inheritance, and changing it to composition instead.
• Update usages accordingly.
• No behavior should be changed by this PR.

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: 2 lines in your changes are missing coverage. Please review.

Comparison is base (573c054) 85.24% compared to head (bad9939) 85.32%.

Files	Patch %	Lines
hathor/verification/verification_service.py	94.44%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #834      +/-   ##
==========================================
+ Coverage   85.24%   85.32%   +0.07%     
==========================================
  Files         282      282              
  Lines       22413    22419       +6     
  Branches     3402     3402              
==========================================
+ Hits        19107    19129      +22     
+ Misses       2615     2606       -9     
+ Partials      691      684       -7     

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