add mole installation and docs

[bniladridas]

Summary

• Add mole installation to setup-mac.sh
• Update README.md to include mole in setup list and add usage section

[gemini-code-assist]

Summary of Changes

Hello @bniladridas, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request streamlines the setup process for new macOS environments by incorporating the mole system optimization tool. It automates the installation of mole via Homebrew and enhances the project's documentation to clearly outline mole's capabilities and usage, making it easier for users to maintain and optimize their Mac systems.

Highlights

• Mole Tool Integration: The mole tool, a Mac optimization utility, has been integrated into the dotfiles setup, ensuring it's installed automatically on new Mac setups.
• Documentation Update: The README.md has been updated to include mole in the list of installed tools and provides a comprehensive usage guide for its various commands.

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[gemini-code-assist]

Code Review

This pull request adds the installation of 'mole' to the Mac setup script and updates the README with usage instructions. The changes are well-structured and clear. I've provided one suggestion to improve logging consistency in the setup script.