ImageTagsSessionHeader: set on action dynamically for show open directory button & change text to open folder

img-ui/src/main/kotlin/dev/nuculabs/imagetagger/ui/controls/ImageTagsSessionHeader.kt

@@ -45,6 +45,9 @@ class ImageTagsSessionHeader : HBox() {
         }
 
         updateHeader(0)
+        openDirectoryButton.setOnAction {
+            openDirectory()
+        }
     }
 
     /**

img-ui/src/main/resources/dev/nuculabs/imagetagger/ui/controls/image-tags-session-header.fxml

@@ -12,7 +12,7 @@
     </padding>
     <Label fx:id="title" text="9 Apr. 2024" styleClass="sessionTitle"/>
     <Pane HBox.hgrow="ALWAYS"/>
-    <Button fx:id="openDirectoryButton" onAction="#openDirectory" text="Open Directory">
+    <Button fx:id="openDirectoryButton" text="Open Folder">
         <tooltip>
             <Tooltip text="Open directory of the images"/>
         </tooltip>