fix: missing subscriber, schedules and storage listener clients (#27)

Author: davemooreuws

lib/src/resources/bucket.dart

@@ -10,6 +10,13 @@ class BucketResource extends SecureResource<BucketPermission> {
       $bp.StorageListenerClient? storageListenerClient})
       : super(name, client) {
     _storageListenerClient = storageListenerClient;
+
+    if (storageListenerClient == null) {
+      _storageListenerClient = $bp.StorageListenerClient(
+          ClientChannelSingleton.instance.clientChannel);
+    } else {
+      _storageListenerClient = storageListenerClient;
+    }
   }
 
   @override

lib/src/resources/schedule.dart

@@ -7,6 +7,13 @@ class Schedule extends Resource {
       {$p.ResourcesClient? client, $sp.SchedulesClient? schedulesClient})
       : super(name, client) {
     _schedulesClient = schedulesClient;
+
+    if (schedulesClient == null) {
+      _schedulesClient =
+          $sp.SchedulesClient(ClientChannelSingleton.instance.clientChannel);
+    } else {
+      _schedulesClient = schedulesClient;
+    }
   }
 
   @override

lib/src/resources/topic.dart

@@ -9,6 +9,13 @@ class Topic extends SecureResource<TopicPermission> {
       {$p.ResourcesClient? client, $tp.SubscriberClient? subscriberClient})
       : super(name, client) {
     _subscriberClient = subscriberClient;
+
+    if (subscriberClient == null) {
+      _subscriberClient =
+          $tp.SubscriberClient(ClientChannelSingleton.instance.clientChannel);
+    } else {
+      _subscriberClient = subscriberClient;
+    }
   }
 
   /// Register a [handler] to subscribe to messages sent to the topic.