Improve setup.bat UI (No backend changes allowed)

[Surajkumar5050]

Description

Right now the setup.bat file is very basic and purely functional. It works fine, but the user experience during installation feels plain and not very welcoming.

I would love the community to help improve the visual/UI experience of the setup script.

Important: this task is strictly about UI/UX improvements only. The setup logic must remain exactly the same.

Requirements

• Do not change any backend logic, commands, flow, or behavior of the setup script.
• Only improve the visual experience (formatting, colors, banners, progress feel, messages, etc.).
• The script must remain stable and compatible across Windows systems.
• Avoid anything that may break due to encoding issues (UTF-8, special characters, emojis that may crash cmd).
• The installer must not crash on different Windows setups.
• Keep the script lightweight and reliable.

Acceptance criteria

• Setup still works exactly the same as before.
• No breaking changes to functionality.
• Works on different Windows environments without encoding issues.
• Installation experience feels more polished and welcoming.

Anyone can open a PR for this, but only one final version will be selected and merged.