refactor: Move external app url launching to its own function

Encapsulating logic and error handling into UiHelpers.launchExternalApplicationURL

lib/ui/pages/services/services.dart

@@ -19,7 +19,6 @@ import 'package:easy_localization/easy_localization.dart';
 import 'package:selfprivacy/ui/pages/services/service_page.dart';
 import 'package:selfprivacy/utils/route_transitions/basic.dart';
 import 'package:selfprivacy/utils/ui_helpers.dart';
-import 'package:url_launcher/url_launcher.dart';
 
 const switchableServices = [
   'bitwarden',
@@ -36,18 +35,6 @@ class ServicesPage extends StatefulWidget {
   State<ServicesPage> createState() => _ServicesPageState();
 }
 
-void _launchURL(final url) async {
-  try {
-    final Uri uri = Uri.parse(url);
-    await launchUrl(
-      uri,
-      mode: LaunchMode.externalApplication,
-    );
-  } catch (e) {
-    print(e);
-  }
-}
-
 class _ServicesPageState extends State<ServicesPage> {
   @override
   Widget build(final BuildContext context) {
@@ -181,7 +168,8 @@ class _Card extends StatelessWidget {
                         Column(
                           children: [
                             GestureDetector(
-                              onTap: () => _launchURL(
+                              onTap: () async =>
+                                  UiHelpers.launchExternalApplicationURL(
                                 'https://${service.url}',
                               ),
                               child: Text(

lib/utils/ui_helpers.dart

@@ -1,8 +1,27 @@
 import 'package:selfprivacy/logic/cubit/server_installation/server_installation_cubit.dart';
+import 'package:url_launcher/url_launcher.dart';
 
 /// it's ui helpers use only for ui components, don't use for logic components.
 
 class UiHelpers {
   static String getDomainName(final ServerInstallationState config) =>
       config.isDomainSelected ? config.serverDomain!.domainName : 'example.com';
+
+  static Future<bool> launchExternalApplicationURL(final url) async {
+    bool launched = false;
+
+    try {
+      final Uri uri = Uri.parse(url);
+      if (await canLaunchUrl(uri)) {
+        launched = await launchUrl(
+          uri,
+          mode: LaunchMode.externalApplication,
+        );
+      }
+    } catch (e) {
+      print(e);
+    }
+
+    return launched;
+  }
 }