breaking: remove unused fields from FileMetrics

[lolgab]

Summary

• Remove lineComplexities, nrMethods, nrClasses, cloc from FileMetrics — none referenced anywhere in this repo.
• Removed LineComplexity case class too, since it only backed lineComplexities.

Test plan

• sbt codacy-plugins-apiJVM/compile
• sbt codacy-plugins-apiJVM/test

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

View in Codacy

🟢 Metrics 0 duplication

Metric	Results
Duplication	0

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[codacy-production]

Pull Request Overview

Although the code quality is technically up to standards according to Codacy, this PR introduces significant breaking changes to the 'codacy-plugins-api' library. Removing fields from the 'FileMetrics' case class and deleting 'LineComplexity' breaks binary compatibility, source compatibility (specifically pattern matching), and JSON serialization for any downstream services or plugins. These issues should prevent merging unless a breaking release is intended. A deprecation strategy is recommended over total removal to maintain stability for external consumers.

About this PR

• This is a breaking change for any external consumers of the 'codacy-plugins-api' library. Removing these fields will likely break integration with external plugins or tools that rely on the stable API contract of this package.

Test suggestions

• Verify that existing code using FileMetrics with the remaining fields (filename, complexity, loc) still compiles and functions.
• Ensure serialization/deserialization of FileMetrics works correctly with the reduced field set.

Prompt proposal for missing tests

Consider implementing these tests if applicable:
1. Verify that existing code using FileMetrics with the remaining fields (filename, complexity, loc) still compiles and functions.
2. Ensure serialization/deserialization of FileMetrics works correctly with the reduced field set.

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[codacy-production]

_{🔴 HIGH RISK}

Removing fields from the 'FileMetrics' case class and deleting the 'LineComplexity' class are breaking changes for source and binary compatibility. Any consumer performing pattern matching on 'FileMetrics' or referencing 'LineComplexity' will fail to compile. Furthermore, this change modifies the serialized JSON structure, which can break integrations that rely on the presence of these keys. Consider restoring the removed fields and marking them with the '@deprecated' annotation, providing default values (e.g., None or Set.empty) to maintain backward compatibility.