brew-rs/fetch: use functions from tty module

[botantony]

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I didn't check this module #21809

[Copilot]

Pull request overview

This PR refactors brew-rs fetch to rely on the shared utils::tty module for ANSI color and terminal control sequences, consolidating previously inlined escape codes and expanding the TTY helper surface.

Changes:

• Add green ANSI support and new cursor/line control helpers to utils::tty.
• Replace hardcoded ANSI escape sequences in fetch with calls into utils::tty.
• Simplify fetch_bottle/print_downloaded_bottle by removing the explicit tty_output parameter and delegating color decisions to tty.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
Library/Homebrew/rust/brew-rs/src/utils/tty.rs	Adds green ANSI support and introduces reusable cursor/line control helpers for terminal output.
Library/Homebrew/rust/brew-rs/src/commands/fetch.rs	Switches progress rendering and status output to use the new tty helpers instead of embedded escape sequences.

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[MikeMcQuaid]

Thanks!