Add Homebrew formula for easier installation

[rursache]

Feature Request

It would be great to have a Homebrew formula for polymarket-cli so users on macOS (and Linux with Linuxbrew) can install it with:

brew install polymarket-cli

Benefits

• Simpler installation — no need to clone the repo or manage dependencies manually
• Automatic updates — brew upgrade keeps the CLI current
• Wider adoption — Homebrew is the de facto package manager for macOS developers and lowers the barrier to entry
• Dependency management — Homebrew handles runtime dependencies automatically

Suggested approach

1. Add a Homebrew formula (either in homebrew-core or a custom tap like polymarket/homebrew-polymarket)
2. Automate formula bumps on new releases via GitHub Actions

Examples of other CLI projects with Homebrew support

• GitHub CLI (gh) — homebrew-core formula
• Supabase CLI — custom tap at supabase/homebrew-tap
• Railway CLI — custom tap at railwayapp/homebrew-tap
• Stripe CLI — custom tap at stripe/homebrew-stripe-cli
• Fly.io CLI (flyctl) — custom tap at superfly/homebrew-tap

[rursache]

I see there is progress already made but the SHA256 checksums are all placeholder strings
https://github.com/Polymarket/polymarket-cli/blob/main/Formula/polymarket.rb

[suhailkakar]

just added! ty for the report: bc7349d