Add CLI command for visor version output

cmd/skywire-cli/commands/node/version.go

@@ -0,0 +1,27 @@
+package node
+
+import (
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	RootCmd.AddCommand(buildInfoCmd)
+}
+
+var buildInfoCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Obtains version and build info of the node",
+	Run: func(_ *cobra.Command, _ []string) {
+		client := rpcClient()
+		summary, err := client.Summary()
+		if err != nil {
+			log.Fatal("Failed to connect:", err)
+		}
+
+		if _, err := summary.BuildInfo.WriteTo(os.Stdout); err != nil {
+			log.Fatal("Failed to output build info:", err)
+		}
+	},
+}