feat(registry): add registry nacosv2 to support nacos-sdk-go/v2

contrib/registry/nacosv2/README.md

@@ -0,0 +1,90 @@
+# Nacos Registry
+
+## example
+### server
+```go
+package main
+
+import (
+	"log"
+
+	"github.com/nacos-group/nacos-sdk-go/v2/clients"
+	"github.com/nacos-group/nacos-sdk-go/v2/common/constant"
+	"github.com/nacos-group/nacos-sdk-go/v2/vo"
+
+	"github.com/go-kratos/kratos/contrib/registry/nacosv2/v2"
+	"github.com/go-kratos/kratos/v2"
+)
+
+func main() {
+	sc := []constant.ServerConfig{
+		*constant.NewServerConfig("127.0.0.1", 8848),
+	}
+
+
+	client, err := clients.NewNamingClient(
+		vo.NacosClientParam{
+			ServerConfigs: sc,
+		},
+	)
+
+	if err != nil {
+		log.Panic(err)
+	}
+
+	r := nacos.New(client)
+
+	// server
+	app := kratos.New(
+		kratos.Name("helloworld"),
+		kratos.Registrar(r),
+	)
+	if err := app.Run(); err != nil {
+		log.Fatal(err)
+	}
+}
+```
+### client
+```go
+package main
+
+import (
+	"context"
+	"log"
+
+	"github.com/nacos-group/nacos-sdk-go/v2/clients"
+	"github.com/nacos-group/nacos-sdk-go/v2/common/constant"
+	"github.com/nacos-group/nacos-sdk-go/v2/vo"
+
+	"github.com/go-kratos/kratos/contrib/registry/nacosv2/v2"
+	"github.com/go-kratos/kratos/v2/transport/grpc"
+)
+
+func main() {
+
+	cc := constant.ClientConfig{
+		NamespaceId: "public",
+		TimeoutMs:   5000,
+	}
+
+	client, err := clients.NewNamingClient(
+		vo.NacosClientParam{
+			ClientConfig: &cc,
+		},
+	)
+
+	if err != nil {
+		log.Panic(err)
+	}
+
+	r := nacos.New(client)
+
+	// client
+	conn, err := grpc.DialInsecure(
+		context.Background(),
+		grpc.WithEndpoint("discovery:///helloworld"),
+		grpc.WithDiscovery(r),
+	)
+	defer conn.Close()
+}
+```

contrib/registry/nacosv2/go.mod

@@ -0,0 +1,50 @@
+module github.com/go-kratos/kratos/contrib/registry/nacosv2/v2
+
+go 1.19
+
+require (
+	github.com/go-kratos/kratos/v2 v2.7.1
+	github.com/nacos-group/nacos-sdk-go/v2 v2.2.4
+)
+
+require (
+	github.com/alibabacloud-go/debug v0.0.0-20190504072949-9472017b5c68 // indirect
+	github.com/alibabacloud-go/tea v1.1.17 // indirect
+	github.com/alibabacloud-go/tea-utils v1.4.4 // indirect
+	github.com/aliyun/alibaba-cloud-sdk-go v1.61.1800 // indirect
+	github.com/aliyun/alibabacloud-dkms-gcs-go-sdk v0.2.2 // indirect
+	github.com/aliyun/alibabacloud-dkms-transfer-go-sdk v0.1.7 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/buger/jsonparser v1.1.1 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/golang/mock v1.6.0 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/jmespath/go-jmespath v0.0.0-20180206201540-c2b33e8439af // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_golang v1.12.2 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.32.1 // indirect
+	github.com/prometheus/procfs v0.7.3 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/multierr v1.6.0 // indirect
+	go.uber.org/zap v1.21.0 // indirect
+	golang.org/x/crypto v0.14.0 // indirect
+	golang.org/x/net v0.17.0 // indirect
+	golang.org/x/sync v0.3.0 // indirect
+	golang.org/x/sys v0.13.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
+	golang.org/x/time v0.1.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20230629202037-9506855d4529 // indirect
+	google.golang.org/grpc v1.56.3 // indirect
+	google.golang.org/protobuf v1.31.0 // indirect
+	gopkg.in/ini.v1 v1.66.2 // indirect
+	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
+)
+
+replace github.com/go-kratos/kratos/v2 => ../../../
+
+replace github.com/buger/jsonparser => github.com/buger/jsonparser v1.1.1