enhanced config debug print (dump w/o ES structs)

pkg/cfg/config.go

@@ -24,6 +24,7 @@ import (
 	"net/http"
 	"os"
 
+	"github.com/alecthomas/repr"
 	"github.com/elastic/elastic-transport-go/v8/elastictransport"
 	"github.com/elastic/go-elasticsearch/v9"
 	"gopkg.in/yaml.v3"
@@ -108,6 +109,26 @@ func (conf *Config) Init() error {
 		}
 	}
 
+	conf.PrintDebug()
+
+	return nil
+}
+
+func (conf *Config) PrintDebug() error {
+	if !conf.Debug {
+		return nil
+	}
+
+	clone := *conf
+
+	for name := range clone.Clusters {
+		clone.Clusters[name] = nil
+	}
+	clone.DefaultCluster = nil
+
+	fmt.Println("config:")
+	repr.Println(clone)
+
 	return nil
 }