chore: enable object-shorthand rule

[araujogui]

Following nodejs/nodejs.org#7851

[Copilot]

Pull Request Overview

This PR enforces consistent usage of object shorthand syntax by updating the code to comply with the object-shorthand rule. It refactors object properties to use the shorthand notation and enables the corresponding ESLint rule across the project.

• Updated src/linter/reporters/index.mjs to use shorthand properties for module exports.
• Enabled the object-shorthand rule in eslint.config.mjs and applied shorthand syntax in plugin configuration.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/linter/reporters/index.mjs	Refactored object properties to shorthand syntax.
eslint.config.mjs	Added the object-shorthand rule and updated plugin configuration syntax.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 48.90%. Comparing base (276687e) to head (ed1c49b).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #312   +/-   ##
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  Coverage   48.90%   48.90%           
=======================================
  Files          82       82           
  Lines        6825     6825           
  Branches      277      277           
=======================================
  Hits         3338     3338           
  Misses       3484     3484           
  Partials        3        3           

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