✨ Add AddFormatter function to allow custom builds to register new formatters

formatters/json.go

@@ -10,6 +10,8 @@ import (
 	"github.com/spf13/viper"
 )
 
+const FormatJSON string = "json"
+
 func newJson(ff *viper.Viper) (Formatter, error) {
 	js := new(Json)
 	err := ff.Unmarshal(js)
@@ -24,7 +26,7 @@ type Json struct {
 }
 
 func (js *Json) Name() string {
-	return "json"
+	return FormatJSON
 }
 
 func (js *Json) marshal(v any) (o []byte, err error) {