provide install via Homebrew

[zachvalenta]

Project looks great, just thinking it would be nice to have install available via os package manager as well.

[pedrozath]

Great idea, will work on that

[zachvalenta]

rough sketch of how to go about this:

• create tap repo (probably something like https://github.com/pedrozath/homebrew-tap)
• write formula

class Coltrane < Formula
    desc "🎹🎸A music theory library with a command-line interface"
    homepage "https://github.com/pedrozath/coltrane"
  
    on_macos do
      on_arm do
        url "$URL"
        sha256 "$SHA"
      end
      on_intel do
        url "$URL"
        sha256 "$SHA"
      end
    end

    on_linux do
      on_intel do
        url "$URL"
        sha256 "$SHA"
      end
    end
    
    def install
      bin.install "coltrane"
    end
  end