feat(hypr): add switch-layout command to hypr extension

[nino-mau]

Adds a switch-layout command to the hypr extension.

Switches the tiling layout (master, dwindle, scrolling, monocle) of the active workspace.

The layout change persists until reboot or hyprctl reload.

[clankus-aurelius]

Thanks for contributing an extension to Vicinae! 👋

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1. An automated review for extension guidelines, safety, error handling, and likely correctness issues.
2. A final review from a Vicinae maintainer.

✅ Ready for human review. The automated reviewer approved the latest commit and a maintainer has been notified.

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[clankus-aurelius]

No actionable issues found in the supplied changes.

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Automated extension review passed. A maintainer review is still required.

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[clankus-aurelius]

@aurelleb automated review passed for ca173f6; this extension is ready for your review.