feat(devoid): types flag

[ElijahKotyluk]

Adds a --types CLI flag for detecting unused TypeScript types.

Reports unused exported types and unused local types using syntax-based analysis.
Type analysis is isolated behind the --types flag and does not affect default behavior.

Includes initial CLI integration tests covering:

• opt-in behavior
• unused exported and local types
• barrel type re-exports

[Copilot]

Pull request overview

This PR introduces a --types flag feature to detect unused TypeScript types (exported and local). The implementation adds comprehensive type analysis capabilities while standardizing Node.js built-in module imports across the codebase by prefixing them with node:.

Key changes:

• Added type analysis infrastructure with three new core modules for scanning, resolving, and analyzing TypeScript type usage
• Implemented CLI support for the --types flag with corresponding output formatting
• Standardized all Node.js built-in imports (fs, path, os, child_process) to use the node: prefix convention

Reviewed changes

Copilot reviewed 44 out of 44 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/core/type/scanTypeExports.ts	New module to scan and collect type exports from TypeScript files
src/core/type/resolveTypeExportGraph.ts	New module to resolve type export chains including barrel re-exports
src/core/type/buildTypeUsageGraph.ts	New module to build comprehensive type usage analysis across project files
src/core/type/analyzeTypeUsage.ts	New module for per-file type declaration and reference analysis
src/cli/typesFormat.ts	New formatting utilities for displaying unused type results
src/cli/index.ts	CLI integration for --types flag with conditional type analysis execution
tests/cli/cli.types.test.ts	Comprehensive test coverage for --types flag functionality
tests/cli/fixtures/types/*	Test fixtures demonstrating type usage scenarios
tests/cli/utils/runCLI.ts	Added debug logging and standardized import
src/core/usage/buildUsageGraph.ts	Import standardization to node:path
src/core/imports/buildImportGraph.ts	Import standardization to node:path
src/core/fileSystem/*	Import standardization to node:fs and node:path
src/core/exports/resolveExportGraph.ts	Import standardization to node:path
src/core/entrypoints/detectEntryPoints.ts	Import standardization to node:fs and node:path
src/core/tsconfig/tsconfigLoader.ts	Import standardization to node:path
src/cli/internalMode.ts	Import standardization to node:fs
tests/**/*.test.ts	Import standardization across all test files

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