* progress on fixing #3947
* upsert after, but only if not already exists
* return an error in some case
* format
* handle case where there has not been any finality yet
* it works
* remove todo
* use variable with comments
* regression test
* revert off by one issue, fix tests
* rename receiver
* @nisdas pr feedback
* skip bls verification with a feature flag at runtime
* gazelle
* more bls mocks
* block roots efficiency
* db block roots now does not show up on the flame graphs
* save validator latest votes batch
* batch save att
* misc improvements to pprof
* import
* include validator index cache
* error if no filter criteria
* resolved comments
* build fix
* lint
* remove delay global
* attestation and block test fixes
* preston suggestions
* fix db tests
* fix missing broken tests
* tests pass
* batch deletions for blocks and attestations
* test for atts delete
* test for blocks delete
* better naming of args in iface methods
* modify a bit
* convert to batch
* blocks batch delete
* batch fixes
* suspecting deadlock
* blocks batch delete tests pass
* more complex test
* include new getter for block
* create block filters from indices
* give every block index a unique bucket
* construct block indices by bucket mmap
* almost done save for the block filters
* include block filters, need a few more small touches for fetching the proper indices by bucket
* full functionality to filter by parent root
* tests pass when using the same logic as attestations
* todo
* proper todo formatting
* first minimum slot range filter
* slot range filters pass
* more filter criteria passing
* tests passing
* add todos
* all block tests pass and work
* rem fmt
* range retrieval test
* fixed test conditions
* instantiate the other buckets
* simplify bucket lookups
* deprecate non map code
* revamp to remove old index prefixes
* create indices from data
* create indices from data
* fetch block roots by slot range
* better abstractions
* simpler abstractions
* roots rename
* comment
* preston feedback
* allow blocks without parent root
