[Kernel] Incremental LogSegment update APIs #5262
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Which Delta project/connector is this regarding?
Description
This PR adds two new internal LogSegment APIs that will help us create updated LogSegments after a transaction.
This is PR 1 as part of the post-commit-snapshot effort.
For the e2e prototype that has already derisked all of this, please see #5213
How was this patch tested?
New UTs.
Does this PR introduce any user-facing changes?
No.