Add support for CSS anchor positioning rules types

[lfantone]

The PR adds the types for the CSS anchor positioning rules.

Relates to #1566

[changeset-bot]

🦋 Changeset detected

Latest commit: 5dd65a3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 10 packages

Name	Type
@vanilla-extract/css	Minor
@vanilla-extract/compiler	Patch
@vanilla-extract/integration	Patch
@vanilla-extract/rollup-plugin	Patch
@vanilla-extract/vite-plugin	Patch
@vanilla-extract/esbuild-plugin	Patch
@vanilla-extract/jest-transform	Patch
@vanilla-extract/parcel-transformer	Patch
@vanilla-extract/webpack-plugin	Patch
@vanilla-extract/next-plugin	Patch

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