* Reconstruct previous epoch without looking at DB: no hindrance to
performance -> removed 15GB
* Store inactivity scores and slashings in MDBX and do not store diffs
for them(they are tiny 700/400 bytes)
* Reduced dumps from every 2048 to 1024 -> Added 5 GB (maybe we should
down it to 768)
* Parallel processing of shuffled sets, 2x performance boost in reading
participation.
* Store balances diffs in a Btree diff matter, see:
https://github.com/ledgerwatch/erigon-documents/blob/master/caplin/design/data-model.md#uint64listuint64vector
* Most of the PR changed files are extra and slightly more complicated
unit tests.
* Fixed Eth1DataVotes not inheriting genesis
* Fixed Attestations simulation using wrong slot when reconstructing
partecipation
* Fixed Copy() operation on BeaconState on Eth1DataVotes
* Used correct ListSSZ type for Eth1DataVotes and HistoricalSummaries
* Fixed wrong []uint64 deltas on empty slots
What does this PR do:
* Optional Backfilling and Caplin Archive Node
* Create antiquary for historical states
* Fixed gaps of chain gap related to the Head of the chain and anchor of
the chain.
* Added basic reader object to Read the Historical state
