[Feature] getNextCrudTransactionBatch

[stevensJourney]

Overview

Some users have requested the ability to batch upload multiple transactions using the uploadData handler. However, the existing getNextCrudBatch and getNextCrudTransaction methods make this process somewhat cumbersome.

• getNextCrudBatch does not group items by transaction, and completing the batch removes all of its CRUD items from the queue. This makes it difficult for developers to fetch and complete a batch corresponding to multiple related transactions.

• getNextCrudTransaction returns only the CRUD entries for a single transaction. Developers are effectively forced to upload transactions one at a time, as repeated calls will continue to return the first pending transaction until it has been completed.

This PR introduces a new method, getNextCrudTransactionBatch (name subject to change), which returns a CrudBatch containing items from multiple CRUD transactions. This allows for more efficient and flexible batch uploads.

Related to #415

[changeset-bot]

🦋 Changeset detected

Latest commit: 3fcb6cb

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

This PR includes changesets to release 7 packages

Name	Type
@powersync/common	Minor
@powersync/web	Minor
@powersync/node	Minor
@powersync/react-native	Minor
@powersync/op-sqlite	Patch
@powersync/tanstack-react-query	Patch
@powersync/diagnostics-app	Patch

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