feat: add AppCleaner to utilities

[arielegs]

Type of Change

• New feature
• Bug fix
• Documentation update
• Refactoring
• Hotfix
• Security patch
• UI/UX improvement

Description

This pull request introduces a new script to install AppCleaner, a popular utility for thoroughly uninstalling applications on macOS.

A new "Utilities" category has been added to the Applications Setup tab in the GUI to house this and future utility scripts. The appcleaner-setup.sh script handles the installation via Homebrew, checks if it's already installed, and provides user-friendly output, consistent with other scripts in the project.

Testing

• Manually executed the appcleaner-setup.sh script to confirm successful installation of AppCleaner.
• Verified that the script correctly identifies when AppCleaner is already installed.
• Launched the MacUtil GUI (run-gui.sh) to ensure the new "Utilities" tab and the "AppCleaner" entry appear and function correctly.

Impact

• Adds one new script (appcleaner-setup.sh) and creates a new utilities directory.
• Modifies scripts/applications-setup/tab_data.toml to include the new category and application.
• The change is minimal and has no impact on existing functionality. It only adds a new, optional installation script.

Issues / other PRs related

• Resolves #

Additional Information

Checklist

• My code adheres to the coding and style guidelines of the project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no errors/warnings/merge conflicts.