add submit bug report to help menu

src/main/java/com/sparrowwallet/sparrow/AppController.java

@@ -323,6 +323,10 @@ public class AppController implements Initializable {
         }
     }
 
+    public void submitBugReport(ActionEvent event) throws IOException {
+        AppServices.get().getApplication().getHostServices().showDocument("https://sparrowwallet.com/submitbugreport");
+    }
+
     public void showAbout(ActionEvent event) {
         Stage aboutStage = getAboutStage();
         aboutStage.show();

src/main/resources/com/sparrowwallet/sparrow/app.fxml

@@ -102,6 +102,7 @@
                     <MenuItem mnemonicParsing="false" text="Show Introduction" onAction="#showIntroduction"/>
                     <MenuItem mnemonicParsing="false" text="Show Online Documentation" onAction="#showDocumentation"/>
                     <MenuItem mnemonicParsing="false" text="Show Log File" onAction="#showLogFile"/>
+                    <MenuItem mnemonicParsing="false" text="Submit Bug Report" onAction="#submitBugReport"/>
                     <MenuItem styleClass="osxHide" mnemonicParsing="false" text="About Sparrow" onAction="#showAbout"/>
                 </Menu>
             </menus>