chore: Clean contracts and tests - part1

[zguesmi]

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[Copilot]

Pull request overview

This PR performs code cleanup and reorganization across contracts and tests. It moves shared base contracts to an abstract/ directory, standardizes naming conventions for npm scripts, and refactors test utilities by removing unnecessary helper functions. The changes maintain backward compatibility while improving code organization and maintainability.

Key Changes:

• Reorganized Solidity contracts by moving shared base contracts (IexecEscrow, IexecPocoCommon, SignatureVerifier) from facets/ to abstract/ directory and marking them as abstract
• Standardized npm script naming from check-<action> to <action>:check pattern
• Refactored test utilities by inlining helper functions and updating imports

Reviewed changes

Copilot reviewed 17 out of 27 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
test/byContract/IexecPocoBoost/IexecEscrow.test.ts	Updated test suite description from "IexecEscrow.v8" to "IexecEscrow"
test/byContract/IexecEscrow/IexecEscrowToken-receiveApproval.test.ts	Removed helper functions and inlined their calls; updated imports to use MatchOrdersFacetMock
package.json	Renamed scripts from check-format/check-doc to format:check/doc:check
hardhat.config.ts	Updated docgen exclusions to reference abstract/ directory instead of facets/
contracts/tools/testing/MatchOrdersFacetMock.sol	Renamed from ReceiveApprovalTestHelper; simplified revert statement
contracts/facets/*.sol	Updated imports to reference abstract base contracts from ../abstract/ directory
contracts/abstract/*.sol	Marked SignatureVerifier and IexecPocoCommon as abstract contracts
.github/workflows/main.yml	Updated CI script calls to use new format:check and doc:check names
docs/solidity/index.md	Reordered IexecEscrow documentation section
docs/uml/*.svg	Auto-generated UML diagrams reflecting contract reorganization
abis/*	Auto-generated ABI files for newly exposed abstract contracts

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.38%. Comparing base (564ae6b) to head (68a8743).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #330   +/-   ##
=======================================
  Coverage   96.38%   96.38%           
=======================================
  Files          33       33           
  Lines        1134     1135    +1     
  Branches      228      228           
=======================================
+ Hits         1093     1094    +1     
  Misses         41       41           

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