[#7] Add new container invocation wrapper for inner ring

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

pkg/innerring/invoke/container.go

@@ -0,0 +1,33 @@
+package invoke
+
+import (
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neofs-node/pkg/morph/client"
+)
+
+type (
+	// ContainerParams for container put invocation.
+	ContainerParams struct {
+		Key       *keys.PublicKey
+		Container []byte
+		Signature []byte
+	}
+)
+
+const (
+	putContainerMethod = "put"
+)
+
+// RegisterContainer invokes Put method.
+func RegisterContainer(cli *client.Client, con util.Uint160, p *ContainerParams) error {
+	if cli == nil {
+		return client.ErrNilClient
+	}
+
+	return cli.Invoke(con, extraFee, putContainerMethod,
+		p.Container,
+		p.Signature,
+		p.Key.Bytes(),
+	)
+}