Implement afferent coupling at module level

[barnabasdomozi]

Closes #672

[Copilot]

Pull Request Overview

Adds computation and testing for afferent coupling metrics at the module level.

• Introduces afferentModuleLevel() in the parser and hooks it into parse()
• Defines a new DB view/struct for distinct entity counts and updates the CppFileMetrics::Type enum
• Adds end-to-end tests and test fixtures for afferent module coupling, including new test sources

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
plugins/cpp_metrics/test/src/cppmetricsparsertest.cpp	Add ParameterizedAfferentModuleCouplingTest suite and update efferent test comments
plugins/cpp_metrics/test/sources/parser/modulemetrics.cpp	Include new module_d/d1.h in module metrics input
plugins/cpp_metrics/test/sources/parser/module_d/d1.h	New test class D1 with dependencies on C1 and C2
plugins/cpp_metrics/parser/src/cppmetricsparser.cpp	Implement afferentModuleLevel(), register it in parse()
plugins/cpp_metrics/parser/include/cppmetricsparser/cppmetricsparser.h	Declare afferentModuleLevel() and its partition multiplier
plugins/cpp_metrics/model/include/model/cpptypedependencymetrics.h	Rename efferent count struct and add afferent count view/struct
plugins/cpp_metrics/model/include/model/cppfilemetrics.h	Add AFFERENT_MODULE to CppFileMetrics::Type

Comments suppressed due to low confidence (1)

plugins/cpp_metrics/test/src/cppmetricsparsertest.cpp:386

• [nitpick] The test suite prefix ParameterizedAfferentModuleCouplingTestSuite is inconsistent with the efferent suite naming. Consider using ParameterizedAfferentModuleCouplingTest for consistency.

INSTANTIATE_TEST_SUITE_P(ParameterizedAfferentModuleCouplingTestSuite,

[barnabasdomozi]

@mcserep
The comment changed in c142f61 is not a typo,
afferentModuleLevel depends on efferentTypeLevel.