Add grouped order by operator

[kevin-dp]

Follow up on #993 which introduces a grouped topK operator. This PR introduces a grouped orderBy operator.

[cursor]

Cursor Agent can help with this pull request. Just @cursor in comments and I'll start working on changes in this branch.
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🦋 Changeset detected

Latest commit: e9305b8

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

This PR includes changesets to release 13 packages

Name	Type
@tanstack/db-ivm	Patch
@tanstack/db	Patch
@tanstack/angular-db	Patch
@tanstack/electric-db-collection	Patch
@tanstack/offline-transactions	Patch
@tanstack/powersync-db-collection	Patch
@tanstack/query-db-collection	Patch
@tanstack/react-db	Patch
@tanstack/rxdb-db-collection	Patch
@tanstack/solid-db	Patch
@tanstack/svelte-db	Patch
@tanstack/trailbase-db-collection	Patch
@tanstack/vue-db	Patch

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commit: e9305b8

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Size Change: 0 B

Total Size: 88.2 kB

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Size Change: 0 B

Total Size: 3.35 kB

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Filename	Size
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