relative paths

[yegor256]

See #216

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PR-Codex overview

This PR focuses on improving the logging and reporting of file paths in the code.

Detailed summary

• Added relative package to improve file path readability in console logs.
• Replaced direct file path references with rel function calls for better readability.
• Updated console log messages to include the relative file paths.

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[yegor256]

@rultor merge

[rultor]

@rultor merge

@yegor256 OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@yegor256 Done! FYI, the full log is here (took me 7min)