Added db.BlocksBySlot and db.BlockRootsBySlot (#8184)

* Added blockBySlot and blockRootBySlot

* Changed to BlocksBySlot and BlockRootsBySlot

* Updated to use BlocksBySlot and BlockRootsBySlot

* Added missing passthrough to karfa exporter

* Return hasBlocks/hasBlockRoots in the new getters

* Fixed CI lint

* Replace call to bytes.Compare with bytes.Equal

* Reordered the returns of the new getters

Co-authored-by: Nishant Das <nishdas93@gmail.com>
Co-authored-by: Raul Jordan <raul@prysmaticlabs.com>

tools/blocktree/main.go

@@ -69,8 +69,7 @@ func main() {
 		// If the state is not available, roll back
 		for state == nil {
 			slot--
-			filter := filters.NewFilter().SetStartSlot(slot).SetEndSlot(slot)
-			rts, err := db.BlockRoots(context.Background(), filter)
+			_, rts, err := db.BlockRootsBySlot(context.Background(), slot)
 			if err != nil {
 				panic(err)
 			}

tools/extractor/BUILD.bazel

@@ -9,7 +9,6 @@ go_library(
     deps = [
         "//beacon-chain/core/state/interop:go_default_library",
         "//beacon-chain/db:go_default_library",
-        "//beacon-chain/db/filters:go_default_library",
         "//shared/featureconfig:go_default_library",
     ],
 )

tools/extractor/main.go

@@ -7,7 +7,6 @@ import (
 
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/state/interop"
 	"github.com/prysmaticlabs/prysm/beacon-chain/db"
-	"github.com/prysmaticlabs/prysm/beacon-chain/db/filters"
 	"github.com/prysmaticlabs/prysm/shared/featureconfig"
 )
 
@@ -29,7 +28,7 @@ func main() {
 	}
 	ctx := context.Background()
 	slot := uint64(*state)
-	roots, err := d.BlockRoots(ctx, filters.NewFilter().SetStartSlot(slot).SetEndSlot(slot))
+	_, roots, err := d.BlockRootsBySlot(ctx, slot)
 	if err != nil {
 		panic(err)
 	}