Hierarchical state diffs in hot DB #6750
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Proposed Changes
This PR implements #5978 (tree-states) but on the hot DB. It allows Lighthouse to massively reduce its disk footprint during non-finality and overall I/O in all cases.
Closes #6580
Conga into #6750
Additional Info
Original WIP PR with lots of context and discussion
Some resources to get up to speed with HDiff concepts: