func (p *Plugin) GRPCClient(ctx context.Context, broker *plugin.GRPCBroker, c *grpc.ClientConn) (interface{}, error) {
	return &GRPCClient{client: pb.NewShoesClient(c)}, nil
}
GRPCClient is client
package shoes
import (
	"context"
	"fmt"
	"os"
	"os/exec"
	"github.com/whywaita/myshoes/pkg/datastore"
	"github.com/hashicorp/go-plugin"
	pb "github.com/whywaita/myshoes/api/proto"
	"github.com/whywaita/myshoes/internal/config"
	"google.golang.org/grpc"
)
func GetClient() (Client, func(), error) {
	Handshake := plugin.HandshakeConfig{
		ProtocolVersion:  1,
		MagicCookieKey:   "SHOES_PLUGIN_MAGIC_COOKIE",
		MagicCookieValue: "are_you_a_shoes?",
	}
	PluginMap := map[string]plugin.Plugin{
		"shoes_grpc": &Plugin{},
	}
	client := plugin.NewClient(&plugin.ClientConfig{
		HandshakeConfig:  Handshake,
		Plugins:          PluginMap,
		Cmd:              exec.Command(config.Config.ShoesPluginPath),
		Managed:          true,
		Stderr:           os.Stderr,
		SyncStdout:       os.Stdout,
		SyncStderr:       os.Stderr,
		AllowedProtocols: []plugin.Protocol{plugin.ProtocolGRPC},
	})
	rpcClient, err := client.Client()
	if err != nil {
		return nil, nil, fmt.Errorf("failed to get shoes client: %w", err)
	}
	raw, err := rpcClient.Dispense("shoes_grpc")
	if err != nil {
		return nil, nil, fmt.Errorf("failed to shoes client instance: %w", err)
	}
	return raw.(Client), client.Kill, nil
}
type Plugin struct {
	plugin.Plugin
	Impl Client
}
func (p *Plugin) GRPCServer(broker *plugin.GRPCBroker, s *grpc.Server) error {
	return nil
}