[#11] Rename neofs contract to frostfs

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>

pkg/morph/event/frostfs/unbind.go

@@ -0,0 +1,33 @@
+package frostfs
+
+import (
+	"fmt"
+
+	"github.com/TrueCloudLab/frostfs-node/pkg/morph/event"
+	"github.com/nspcc-dev/neo-go/pkg/core/state"
+)
+
+type Unbind struct {
+	bindCommon
+}
+
+func ParseUnbind(e *state.ContainedNotificationEvent) (event.Event, error) {
+	var (
+		ev  Unbind
+		err error
+	)
+
+	params, err := event.ParseStackArray(e)
+	if err != nil {
+		return nil, fmt.Errorf("could not parse stack items from notify event: %w", err)
+	}
+
+	err = parseBind(&ev.bindCommon, params)
+	if err != nil {
+		return nil, err
+	}
+
+	ev.txHash = e.Container
+
+	return ev, nil
+}