added debug output

src/main/java/de/srsoftware/widerhall/Configuration.java

@@ -33,6 +33,7 @@ public class Configuration {
     public Configuration load(File file) {
         this.file = file;
         if (file.exists()) try {
+            LOG.info("Loading configuration from {}",file);
             var newVals = (JSONObject) new JSONParser().parse(Files.readString(file.toPath()));
             data.putAll(newVals);
         } catch (ParseException | IOException e){