Add Safari URL preview to picker

[cdevroe]

Summary

• add WebView for previewing URLs
• show the preview web view next to the profile picker
• register the new file in the Xcode project

Testing

• swiftc --version
• Codex couldn't run certain commands due to environment limitations. Consider configuring a setup script or internet access in your Codex environment to install dependencies.

---

https://chatgpt.com/codex/tasks/task_e_686442b6d44483249fdcc5fc9ffccda1

[cdevroe]

@zhenyi Started a PR using OpenAI Codex to add a web view to Switcheroo to preview the URL that was clicked while you're choosing which Safari Profile you'd like to open it in. Just me playing, but if you see anything useful in here or have any tips, please let me know.

[zhenyi]

I probably won't merge this because the current switcher design doesn't look good with a web preview. When I originally designed the switcher, I didn't realize Little Arc's UI would be so... non-little, so I ended up taking Switcheroo in a different direction 😅

[cdevroe]

Totally OK, it was an experiment. Perhaps if anyone every wants to pick this up they can.