Add a event provider which hold the repository events which are provided

by the ui.

fix the performance issue. Issue was the selection of targets. The table
needs very long to calculate the scroll position.

Signed-off-by: SirWayne <dennis.melzer@bosch-si.com>

hawkbit-autoconfigure/src/main/java/org/eclipse/hawkbit/autoconfigure/ui/UIAutoConfiguration.java

@@ -9,6 +9,8 @@
 package org.eclipse.hawkbit.autoconfigure.ui;
 
 import org.eclipse.hawkbit.DistributedResourceBundleMessageSource;
+import org.eclipse.hawkbit.ui.HawkbitEventProvider;
+import org.eclipse.hawkbit.ui.UIEventProvider;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.vaadin.spring.annotation.EnableVaadinExtensions;
@@ -17,9 +19,6 @@ import org.vaadin.spring.security.annotation.EnableVaadinSecurity;
 
 /**
  * The hawkbit-ui autoconfiguration.
- * 
- *
- *
  */
 @Configuration
 @EnableVaadinSecurity
@@ -37,4 +36,14 @@ public class UIAutoConfiguration {
         return new DistributedResourceBundleMessageSource();
     }
 
+    /**
+     * A event provider bean which hold the supported events for the UI.
+     * 
+     * @return the provider bean
+     */
+    @Bean
+    public UIEventProvider eventProvider() {
+        return new HawkbitEventProvider();
+    }
+
 }