Add getCrudTransactions() returning an async generator

[simolus3]

Sometimes, users want a batch of data to upload while also ensuring that that batch respects transaction boundaries. At the moment, we don't really have APIs for that, because:

• getCrudBatch() returns a batch of items with a flexible size limit, but doesn't respect transaction boundaries (so it's possible to accidentally upload half of a transaction).
• getNextCrudTransaction() returns a complete transaction, but nothing more. It will also always return the oldest transaction, so you can't call getNextCrudTransaction() multiple times to get more than one.

This adds getCrudTransactions(), an async iterable that starts with the oldest transaction and then keeps on yielding more transactions until the iterator is closed. This gives users a tool to compose batches with flexible sizes while still ensuring everything is grouped by transactions.

[changeset-bot]

🦋 Changeset detected

Latest commit: 75c3e2c

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

This PR includes changesets to release 8 packages

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

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[stevensJourney]

Overall looks good to me. Left some comments to consider with React Native.