Implement cli parameter basis

src/main/java/at/pcgamingfreaks/mkvaudiosubtitlechanger/config/AttributeConfig.java

@@ -4,6 +4,7 @@ import lombok.Getter;
 import lombok.extern.log4j.Log4j2;
 
 import java.util.List;
+import java.util.stream.Collectors;
 
 @Log4j2
 @Getter
@@ -15,4 +16,13 @@ public class AttributeConfig {
         this.audio = audio;
         this.subtitle = subtitle;
     }
+
+    @Override
+    public String toString() {
+        final StringBuffer sb = new StringBuffer("AttributeConfig{");
+        sb.append("audio=").append(String.join(", ", audio));
+        sb.append(", subtitle=").append(String.join(", ", subtitle));
+        sb.append('}');
+        return sb.toString();
+    }
 }