[#496] morph/client: provide notary options on client creation

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

pkg/morph/client/constructor.go

@@ -2,6 +2,7 @@ package client
 
 import (
 	"context"
+	"fmt"
 	"time"
 
 	"github.com/nspcc-dev/neo-go/pkg/core/native/nativenames"
@@ -27,6 +28,8 @@ type cfg struct {
 	gas util.Uint160 // native gas script-hash
 
 	waitInterval time.Duration
+
+	notaryOpts []NotaryOption
 }
 
 const (
@@ -93,14 +96,22 @@ func New(key *keys.PrivateKey, endpoint string, opts ...Option) (*Client, error)
 		return nil, err
 	}
 
-	return &Client{
+	c := &Client{
 		logger:       cfg.logger,
 		client:       cli,
 		acc:          account,
 		gas:          gas,
 		designate:    designate,
 		waitInterval: cfg.waitInterval,
-	}, nil
+	}
+
+	if len(cfg.notaryOpts) != 0 {
+		if err := c.enableNotarySupport(cfg.notaryOpts...); err != nil {
+			return nil, fmt.Errorf("can't enable notary support: %w", err)
+		}
+	}
+
+	return c, nil
 }
 
 // WithContext returns a client constructor option that
@@ -144,3 +155,10 @@ func WithLogger(logger *logger.Logger) Option {
 		}
 	}
 }
+
+// WithNotaryOptions enables notary support and sets notary options for the client.
+func WithNotaryOptions(opts ...NotaryOption) Option {
+	return func(c *cfg) {
+		c.notaryOpts = opts
+	}
+}