"fix: support aliases from extended tsconfig files"

[namrarafique93-del]

Summary

Adds support for path aliases defined in extended TypeScript and JavaScript configuration files.

Closes #1887

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Type of Change

• Bug fix
• New feature
• Documentation update
• Refactor / code cleanup

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Changes Made

• Added support for resolving configuration files referenced through "extends"
• Merged path aliases from parent configurations
• Preserved local configuration precedence
• Improved alias detection for projects using shared base configs

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How to Test

1. Create a "tsconfig.base.json" containing path aliases
2. Create a "tsconfig.json" that extends the base config
3. Import a module using one of the inherited aliases
4. Run the dependency checker
5. Verify the alias is not incorrectly reported as a missing dependency

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Screenshots (if UI change)

N/A

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Checklist

• Linked issue in summary
• Self-reviewed the diff
• No TypeScript errors introduced
• Added/updated tests if applicable

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Additional Notes

This fixes alias detection for projects that centralize configuration through shared TypeScript or JavaScript base configs.

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