Default order-properties to sort-package-json, not legacy

[JoshuaKGoldberg]

Following up on #31 -> #55: now that #55 is merged, we can look at changing the default value for the order option of the order-properties rule to "sort-package-json" instead of "legacy". This is a breaking change.

[JoshuaKGoldberg]

@all-contributors please add @JoshuaKGoldberg for ideas.

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[allcontributors]

@JoshuaKGoldberg

I've put up a pull request to add @JoshuaKGoldberg! 🎉

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[github-actions]

🎉 This is included in version v0.6.0 🎉

The release is available on:

• GitHub releases
• npm package (@latest dist-tag)

Cheers! 📦🚀