Describe the feature or problem you’d like to solve

Ability to open a specific GitHub URL with gh browse in the default browser, regardless of the operating system.

Possible use case in a bash extensions, e.g. when opening a specific workflow, a comment on an issue, or a pr review by selecting it with fzf.

Additional context

• current workarounds

#!/usr/bin/env bash
set -euo pipefail

url="https://github.com/cli/cli/pull/4663#pullrequestreview-794795478"

# 1st: case
  case "$(uname -s)" in
    Darwin) open "$url"     ;;
    Linux)  xdg-open "$url" ;;
    *) 		start "$url" ;;
  esac

# 2nd: python
python -m webbrowser "$url"