Move to frostfs-node

Signed-off-by: Pavel Karpy <p.karpy@yadro.com>

cmd/frostfs-adm/internal/modules/morph/download.go

@@ -0,0 +1,40 @@
+package morph
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+
+	"github.com/google/go-github/v39/github"
+	"github.com/spf13/cobra"
+)
+
+func downloadContractsFromGithub(cmd *cobra.Command) (io.ReadCloser, error) {
+	gcl := github.NewClient(nil)
+	release, _, err := gcl.Repositories.GetLatestRelease(context.Background(), "nspcc-dev", "frostfs-contract")
+	if err != nil {
+		return nil, fmt.Errorf("can't fetch release info: %w", err)
+	}
+
+	cmd.Printf("Found %s (%s), downloading...\n", release.GetTagName(), release.GetName())
+
+	var url string
+	for _, a := range release.Assets {
+		if strings.HasPrefix(a.GetName(), "frostfs-contract") {
+			url = a.GetBrowserDownloadURL()
+			break
+		}
+	}
+	if url == "" {
+		return nil, errors.New("can't find contracts archive in release assets")
+	}
+
+	resp, err := http.Get(url)
+	if err != nil {
+		return nil, fmt.Errorf("can't fetch contracts archive: %w", err)
+	}
+	return resp.Body, nil
+}