chore: Remove unused signature verifier solv6 contract

[zguesmi]

No description provided.

[Copilot]

Pull Request Overview

This PR consolidates the SignatureVerifier implementation by removing the duplicate SignatureVerifier.v8.sol file and updating SignatureVerifier.sol to use Solidity 0.8.0. All references throughout the codebase are updated to use the single consolidated implementation.

Key changes:

• Removed duplicate SignatureVerifier.v8.sol file
• Updated SignatureVerifier.sol from Solidity 0.6 to 0.8 with modern OpenZeppelin imports
• Updated all import statements across facet files to reference the consolidated implementation
• Removed outdated ABI files for legacy interfaces
• Updated configuration files to reflect the consolidation

Reviewed Changes

Copilot reviewed 12 out of 16 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
hardhat.config.ts	Removed exclusion of SignatureVerifier.v8.sol from documentation generation
contracts/facets/SignatureVerifier.v8.sol	Deleted duplicate v8 implementation file
contracts/facets/SignatureVerifier.sol	Updated to Solidity 0.8 with modern dependencies and implementation
contracts/facets/IexecPocoBoostFacet.sol	Updated import to reference consolidated SignatureVerifier
contracts/facets/IexecPocoAccessorsFacet.sol	Updated import to reference consolidated SignatureVerifier
contracts/facets/IexecPoco2Facet.sol	Updated import to reference consolidated SignatureVerifier
contracts/facets/IexecPoco1Facet.sol	Updated import to reference consolidated SignatureVerifier
contracts/facets/IexecOrderManagementFacet.sol	Updated import to reference consolidated SignatureVerifier
docs/uml/*.svg	Regenerated UML diagrams reflecting the consolidated architecture
abis/human-readable-abis/*	Removed ABI files for legacy ERC interfaces no longer directly imported
.solcover.js	Removed skip directive for SignatureVerifier.sol to enable coverage

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.53%. Comparing base (3b28585) to head (678fa98).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #315   +/-   ##
=======================================
  Coverage   96.53%   96.53%           
=======================================
  Files          32       32           
  Lines        1069     1069           
  Branches      213      213           
=======================================
  Hits         1032     1032           
  Misses         37       37           

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[Le-Caignec]

LGTM