Support per-record offset ack w/ OffsetMetadata#246

Draft

kawamuray wants to merge 2 commits intoline:masterfrom kawamuray:prc

+1,009-191

Commits on Oct 2, 2024

Introduce OutOfOrderCommitControl V4
kawamuray
committed

Commits on Oct 23, 2024

Save/restore per-offset completion status as metadata
kawamuray
committed