[#1502] core: Add AddressWithType

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

pkg/core/object/address.go

@@ -0,0 +1,13 @@
+package object
+
+import (
+	"github.com/nspcc-dev/neofs-sdk-go/object"
+	oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
+)
+
+// AddressWithType groups object address with its NeoFS
+// object type.
+type AddressWithType struct {
+	Address oid.Address
+	Type    object.Type
+}