Add donation link

app/lib/help_utils.dart

@@ -10,3 +10,5 @@ const enhanceEsrganUrl = "https://bit.ly/3wO0NJP";
 const enhanceStyleTransferUrl = "https://bit.ly/3agpTcF";
 const enhanceDeepLabColorPopUrl = "https://bit.ly/3Rx0YCD";
 const editPhotosUrl = "https://bit.ly/3v82oKA";
+
+const donateUrl = "https://bit.ly/3wQOHPZ";

app/lib/l10n/app_en.arb

@@ -1452,6 +1452,10 @@
 		"description": "Save the image on your Nextcloud server"
 	},
 
+	"donationTitle": "Buy me a coffee",
+	"donationButtonLabel": "BUY ME A COFFEE",
+	"donationShortMessage": "Want to help?",
+
 	"errorUnauthenticated": "Unauthenticated access. Please sign-in again if the problem continues",
 	"@errorUnauthenticated": {
 		"description": "Error message when server responds with HTTP401"

app/lib/widget/changelog.dart

@@ -1,6 +1,9 @@
 import 'package:flutter/material.dart';
 import 'package:logging/logging.dart';
+import 'package:nc_photos/app_localizations.dart';
+import 'package:nc_photos/help_utils.dart' as help_util;
 import 'package:nc_photos/theme.dart';
+import 'package:nc_photos/url_launcher_util.dart';
 
 class ChangelogArguments {
   const ChangelogArguments(this.fromVersion);
@@ -39,11 +42,33 @@ class Changelog extends StatelessWidget {
 
   AppBar _buildAppBar() => AppBar(
         title: const Text("Changelog"),
+        elevation: 0,
       );
 
   Widget _buildContent(BuildContext context) {
     return Column(
       children: [
+        Container(
+          padding: const EdgeInsets.symmetric(horizontal: 16),
+          color: Theme.of(context).brightness == Brightness.light
+              ? Colors.blue[100]
+              : Colors.blueGrey[800],
+          child: Row(
+            mainAxisAlignment: MainAxisAlignment.start,
+            mainAxisSize: MainAxisSize.max,
+            children: [
+              Expanded(
+                child: Text(L10n.global().donationShortMessage),
+              ),
+              TextButton(
+                onPressed: () {
+                  launch(help_util.donateUrl);
+                },
+                child: Text(L10n.global().donationButtonLabel),
+              ),
+            ],
+          ),
+        ),
         Expanded(
           child: ListView.builder(
             itemCount: _changelogs.length,

app/lib/widget/settings.dart

@@ -11,6 +11,7 @@ import 'package:nc_photos/di_container.dart';
 import 'package:nc_photos/entity/sqlite_table_extension.dart' as sql;
 import 'package:nc_photos/event/event.dart';
 import 'package:nc_photos/exception_util.dart' as exception_util;
+import 'package:nc_photos/help_utils.dart' as help_util;
 import 'package:nc_photos/k.dart' as k;
 import 'package:nc_photos/language_util.dart' as language_util;
 import 'package:nc_photos/mobile/android/android_info.dart';
@@ -233,6 +234,16 @@ class _SettingsState extends State<Settings> {
                   }
                 },
               ),
+              ListTile(
+                leading: Icon(
+                  Icons.coffee_outlined,
+                  color: AppTheme.getUnfocusedIconColor(context),
+                ),
+                title: Text(L10n.global().donationTitle),
+                onTap: () {
+                  launch(help_util.donateUrl);
+                },
+              ),
               ListTile(
                 title: Text(L10n.global().settingsSourceCodeTitle),
                 onTap: () {