Add gRPC user service
diff --git a/core/kg/rpc/user_service.go b/core/kg/rpc/user_service.go
new file mode 100644
index 0000000..b5ac194
--- /dev/null
+++ b/core/kg/rpc/user_service.go
@@ -0,0 +1,33 @@
+package rpc
+
+import (
+	"context"
+
+	"github.com/giolekva/pcloud/core/kg/app"
+	"github.com/giolekva/pcloud/core/kg/model/proto"
+)
+
+type userService struct {
+	proto.UnimplementedUserServiceServer
+	app *app.App
+}
+
+// NewService returns new user service
+func NewService(app *app.App) proto.UserServiceServer {
+	s := &userService{
+		app: app,
+	}
+
+	return s
+}
+
+func (us *userService) GetUser(context.Context, *proto.GetUserRequest) (*proto.User, error) {
+	// us.app.getUser...
+	return nil, nil
+}
+func (us *userService) ListUsers(context.Context, *proto.ListUserRequest) (*proto.ListUserResponse, error) {
+	return nil, nil
+}
+func (us *userService) CreateUser(context.Context, *proto.CreateUserRequest) (*proto.User, error) {
+	return nil, nil
+}