[#371] Support recent changes in NeoFS API protocol

Support:
  * new status codes (object, container, session);
  * object `Lock` message;
  * different signature schemes.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

session/status_test.go

@@ -0,0 +1,15 @@
+package session_test
+
+import (
+	"testing"
+
+	"github.com/nspcc-dev/neofs-api-go/v2/session"
+	statustest "github.com/nspcc-dev/neofs-api-go/v2/status/test"
+)
+
+func TestStatusCodes(t *testing.T) {
+	statustest.TestCodes(t, session.LocalizeFailStatus, session.GlobalizeFail,
+		session.StatusTokenNotFound, 4096,
+		session.StatusTokenExpired, 4097,
+	)
+}