[#1216] neofs-cli: Allow to create and save session token

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

cmd/neofs-cli/modules/session/root.go

@@ -0,0 +1,14 @@
+package session
+
+import (
+	"github.com/spf13/cobra"
+)
+
+var Cmd = &cobra.Command{
+	Use:   "session",
+	Short: "Operations with session token",
+}
+
+func init() {
+	Cmd.AddCommand(createCmd)
+}