allows lib users to add own logger

example/example.dart

@@ -13,7 +13,7 @@ void main() async {
 
   var credentials = SpotifyApiCredentials(keyMap['id'], keyMap['secret']);
   var spotify = SpotifyApi(credentials);
-  spotify.enableDebugMode(true, LoggingDetail.simple);
+  spotify.enableLogging(true, loggingDetail: LoggingDetail.simple);
   // spotify.loggingDetail = LoggingDetail.simple;
 
   print('\nExpannd shortened spotify link of https://spotify.link/hRkBrwub9xb');

lib/src/spotify_base.dart

@@ -181,11 +181,12 @@ abstract class SpotifyApiBase {
   }
 
   /// [enable]s logging of the requests and responses on the debug console.
-  /// Use [loggingDetail] to control how much should be logged. Default's set
-  /// to [LoggingDetail.simple].
-  void enableDebugMode(bool enable,
-      [LoggingDetail loggingDetail = LoggingDetail.simple]) {
-    _spotifyClient.enableLogging = enable;
+  /// [loggingDetail] controls the logging verbosity. Default's set
+  /// to [LoggingDetail.simple]. 
+  /// Use own [logger] is also possible for e.g. saving logs into a file etc.
+  void enableLogging(bool enable,
+      {LoggingDetail loggingDetail = LoggingDetail.simple, Logger? logger}) {
+    _spotifyClient.enableLogging(enable, logger: logger);
     _spotifyClient.logginDetail = loggingDetail;
   }
 

lib/src/spotify_client.dart

@@ -20,11 +20,13 @@ part of '../spotify.dart';
 class SpotifyClient with http.BaseClient {
   final FutureOr<oauth2.Client> _inner;
 
-  final Logger _logger = Logger();
+  late Logger _logger;
 
   bool _enableLogging = false;
-  get enableLogging => _enableLogging;
-  set enableLogging(value) => _enableLogging = value;
+  void enableLogging(bool enable, {Logger? logger}){
+     _enableLogging = enable;
+     _logger = logger ?? Logger();
+  }
 
   LoggingDetail _detail = LoggingDetail.full;
   get loggingDetail => _detail;