adding dutch language

lib/get_time_ago.dart

@@ -17,6 +17,7 @@ export 'package:get_time_ago/src/messages/languages/hi_msg.dart';
 export 'package:get_time_ago/src/messages/languages/id_msg.dart';
 export 'package:get_time_ago/src/messages/languages/ja_msg.dart';
 export 'package:get_time_ago/src/messages/languages/ko_msg.dart';
+export 'package:get_time_ago/src/messages/languages/nl_msg.dart';
 export 'package:get_time_ago/src/messages/languages/oc_msg.dart';
 export 'package:get_time_ago/src/messages/languages/pt_br_msg.dart';
 export 'package:get_time_ago/src/messages/languages/ro_msg.dart';

lib/src/messages/languages/nl_msg.dart

@@ -0,0 +1,50 @@
+import '../messages.dart';
+
+/// The [DutchMessages] class provides Dutch language-specific
+/// implementations of the [Messages] interface. This class is used to format
+/// the "time ago" strings in Dutch.
+class DutchMessages implements Messages {
+  /// Prefix added before the time message.
+  @override
+  String prefixAgo() => '';
+
+  /// Suffix added after the time message.
+  @override
+  String suffixAgo() => 'geleden';
+
+  /// Message when the elapsed time is less than 15 seconds.
+  @override
+  String justNow(int seconds) => 'zojuist';
+
+  /// Message for when the elapsed time is less than a minute.
+  @override
+  String secsAgo(int seconds) => '$seconds seconden';
+
+  /// Message for when the elapsed time is about a minute.
+  @override
+  String minAgo(int minutes) => 'een minuut';
+
+  /// Message for when the elapsed time is in minutes.
+  @override
+  String minsAgo(int minutes) => '$minutes minuten';
+
+  /// Message for when the elapsed time is about an hour.
+  @override
+  String hourAgo(int minutes) => 'een uur';
+
+  /// Message for when the elapsed time is in hours.
+  @override
+  String hoursAgo(int hours) => '$hours uren';
+
+  /// Message for when the elapsed time is about a day.
+  @override
+  String dayAgo(int hours) => 'een dag';
+
+  /// Message for when the elapsed time is in days.
+  @override
+  String daysAgo(int days) => '$days dagen';
+
+  /// Word separator to be used when joining the parts of the message.
+  @override
+  String wordSeparator() => ' ';
+}

lib/src/utils/data.dart

@@ -8,6 +8,7 @@ import '../messages/languages/hi_msg.dart';
 import '../messages/languages/id_msg.dart';
 import '../messages/languages/ja_msg.dart';
 import '../messages/languages/ko_msg.dart';
+import '../messages/languages/nl_msg.dart';
 import '../messages/languages/oc_msg.dart';
 import '../messages/languages/pt_br_msg.dart';
 import '../messages/languages/ro_msg.dart';
@@ -51,5 +52,6 @@ class Data {
     'ur': UrduMessages(), // Urdu
     'vi': VietnameseMessages(), // Vietnamese
     'ro': RomanianMessages(), // Romanian
+    'nl': DutchMessages(), // Dutch
   };
 }