Configurable DB Mmap Size for Beacon Node and Validator Client (#8448)

* add flag to beacon and validator

* gaz

* fuzz

* add dep viz

* add to tools

tools/extractor/BUILD.bazel

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

tools/extractor/main.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/state/interop"
 	"github.com/prysmaticlabs/prysm/beacon-chain/db"
+	"github.com/prysmaticlabs/prysm/beacon-chain/db/kv"
 	"github.com/prysmaticlabs/prysm/shared/featureconfig"
 )
 
@@ -22,7 +23,7 @@ func main() {
 	defer resetCfg()
 	flag.Parse()
 	fmt.Println("Starting process...")
-	d, err := db.NewDB(context.Background(), *datadir)
+	d, err := db.NewDB(context.Background(), *datadir, &kv.Config{})
 	if err != nil {
 		panic(err)
 	}