Add V3 Suffix to All Prysm Packages (#11083)

* v3 import renamings

* tidy

* fmt

* rev

* Update beacon-chain/core/epoch/precompute/reward_penalty_test.go

* Update beacon-chain/core/helpers/validators_test.go

* Update beacon-chain/db/alias.go

* Update beacon-chain/db/alias.go

* Update beacon-chain/db/alias.go

* Update beacon-chain/db/iface/BUILD.bazel

* Update beacon-chain/db/kv/kv.go

* Update beacon-chain/db/kv/state.go

* Update beacon-chain/rpc/prysm/v1alpha1/validator/attester_test.go

* Update beacon-chain/rpc/prysm/v1alpha1/validator/attester_test.go

* Update beacon-chain/sync/initial-sync/service.go

* fix deps

* fix bad replacements

* fix bad replacements

* change back

* gohashtree version

* fix deps

Co-authored-by: Nishant Das <nishdas93@gmail.com>
Co-authored-by: Potuz <potuz@prysmaticlabs.com>

testing/benchmark/BUILD.bazel

@@ -4,7 +4,7 @@ go_library(
     name = "go_default_library",
     srcs = ["pregen.go"],
     data = ["//testing/benchmark/benchmark_files:benchmark_data"],
-    importpath = "github.com/prysmaticlabs/prysm/testing/benchmark",
+    importpath = "github.com/prysmaticlabs/prysm/v3/testing/benchmark",
     visibility = ["//visibility:public"],
     deps = [
         "//beacon-chain/state:go_default_library",

testing/benchmark/pregen.go

@@ -7,10 +7,10 @@ import (
 	"os"
 
 	"github.com/bazelbuild/rules_go/go/tools/bazel"
-	"github.com/prysmaticlabs/prysm/beacon-chain/state"
-	v1 "github.com/prysmaticlabs/prysm/beacon-chain/state/v1"
-	"github.com/prysmaticlabs/prysm/config/params"
-	ethpb "github.com/prysmaticlabs/prysm/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v3/beacon-chain/state"
+	v1 "github.com/prysmaticlabs/prysm/v3/beacon-chain/state/v1"
+	"github.com/prysmaticlabs/prysm/v3/config/params"
+	ethpb "github.com/prysmaticlabs/prysm/v3/proto/prysm/v1alpha1"
 )
 
 // ValidatorCount is for declaring how many validators the benchmarks will be

testing/benchmark/pregen_test.go

@@ -3,7 +3,7 @@ package benchmark
 import (
 	"testing"
 
-	"github.com/prysmaticlabs/prysm/testing/require"
+	"github.com/prysmaticlabs/prysm/v3/testing/require"
 )
 
 func TestPreGenFullBlock(t *testing.T) {