chore: add a script to easily checkout prs

[rickeylev]

This adds a script I've had for awhile to make it easier to grab PRs and work on them.

It makes grabbing and editing a user's PR much easier, especially with some aliases
setup:

git pr-checkout <PR url>
...edit files...
git pr-push

While things like gh pr checkout exist, it doesn't well handle the "triangle"
workflow and some other edge cases.

[gemini-code-assist]

Summary of Changes

Hello @rickeylev, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a new utility script designed to significantly simplify the workflow for interacting with GitHub Pull Requests. It addresses common complexities, particularly in 'triangle' development models, by automating the process of checking out, pulling updates from, and pushing changes to PR branches. The script aims to enhance developer efficiency by providing a more intuitive command-line interface for PR management.

Highlights

• New git-pr script added: A new shell script, tools/git-pr, has been introduced to streamline common Git operations related to Pull Requests.
• Simplified PR Checkout: The git-pr checkout command allows users to easily fetch and switch to a PR's branch using its number or URL, handling remote setup automatically.
• Enhanced Push/Pull for PRs: The script includes git-pr pull and git-pr push commands that correctly interact with the PR's remote branch, simplifying the 'triangle' workflow.
• Dependency Checks: The checkout command now checks for the presence of gh (GitHub CLI) and jq and provides informative error messages if they are missing.

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Changelog

• tools/git-pr
  • Added a new executable shell script to manage GitHub Pull Request workflows.

Activity

• No activity has been recorded on this pull request yet.

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[gemini-code-assist]

Code Review

This pull request introduces a useful git-pr script to streamline the process of checking out, pulling, and pushing changes for GitHub pull requests, especially in a 'triangle workflow' setup. However, the script contains several instances of unquoted variables in shell commands, specifically in git push and git pull operations, which can lead to word splitting and argument injection. This practice is insecure and should be remediated by consistently using double quotes around variables. Additionally, there is a critical bug in handling the base remote for certain PRs, and improvements are needed for error handling consistency and user experience.

[aignas]

I use the gh CLI and you just need to do gh pr checkout to checkout a particular PR.

[rickeylev]

I've had endless trouble trying to use plain gh pr checkout. Checkout out usually worked, but updating and pushing would frequently break. 🤷