[#148] linter: Add funlen linter

Long functions are hard to understand and source of errors

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

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

@@ -57,6 +57,7 @@ func init() {
 	ff.String(customZoneFlag, "frostfs", "Custom zone for NNS")
 }
 
+// nolint: funlen
 func deployContractCmd(cmd *cobra.Command, args []string) error {
 	v := viper.GetViper()
 	c, err := newInitializeContext(cmd, v)