Add Crowdin translation links to settings pages

Added Crowdin project URL constant and resource string. Exposed Crowdin link in About and General settings via new properties and hyperlink buttons, encouraging users to help translate Flow.

Author: Jack251970

Flow.Launcher.Infrastructure/Constant.cs

@@ -24,6 +24,7 @@ public static class Constant
         public static readonly string Version = FileVersionInfo.GetVersionInfo(Assembly.Location.NonNull()).ProductVersion;
         public static readonly string Dev = "Dev";
         public const string Documentation = "https://flowlauncher.com/docs/#/usage-tips";
+        public const string CrowdinProjectUrl = "https://crowdin.com/project/flow-launcher";
 
         public static readonly int ThumbnailSize = 64;
         private static readonly string ImagesDirectory = Path.Combine(ProgramDirectory, "Images");

Flow.Launcher/Languages/en.xaml

@@ -144,6 +144,7 @@
     <system:String x:Key="DoublePinyinSchemasXingKongJianDao">Xing Kong Jian Dao</system:String>
     <system:String x:Key="DoublePinyinSchemasDaNiu">Da Niu</system:String>
     <system:String x:Key="DoublePinyinSchemasXiaoLang">Xiao Lang</system:String>
+    <system:String x:Key="HelpUsTranslateFlow">Help us translate Flow</system:String>
 
     <system:String x:Key="AlwaysPreview">Always Preview</system:String>
     <system:String x:Key="AlwaysPreviewToolTip">Always open preview panel when Flow activates. Press {0} to toggle preview.</system:String>

Flow.Launcher/SettingPages/ViewModels/SettingsPaneAboutViewModel.cs

@@ -44,6 +44,7 @@ public string CacheFolderSize
     public string Documentation => Constant.Documentation;
     public string Docs => Constant.Docs;
     public string Github => Constant.GitHub;
+    public string Crowdin => Constant.CrowdinProjectUrl;
 
     public string Version => Constant.Version switch
     {

Flow.Launcher/SettingPages/ViewModels/SettingsPaneGeneralViewModel.cs

@@ -226,6 +226,8 @@ private void UpdateEnumDropdownLocalizations()
         Settings.CustomBrowser.OnDisplayNameChanged();
     }
 
+    public string Crowdin => Constant.CrowdinProjectUrl;
+
     public string Language
     {
         get => Settings.Language;

Flow.Launcher/SettingPages/Views/SettingsPaneAbout.xaml

@@ -77,6 +77,7 @@
                     <ui:HyperlinkButton Content="{DynamicResource website}" NavigateUri="{Binding Website}" />
                     <ui:HyperlinkButton Content="{DynamicResource documentation}" NavigateUri="{Binding Documentation}" />
                     <ui:HyperlinkButton Content="{DynamicResource github}" NavigateUri="{Binding Github}" />
+                    <ui:HyperlinkButton Content="Crowdin" NavigateUri="{Binding Crowdin}" />
                 </StackPanel>
             </ui:SettingsCard>
 

Flow.Launcher/SettingPages/Views/SettingsPaneGeneral.xaml

@@ -565,13 +565,16 @@
                     <ui:FontIcon Glyph="&#xf2b7;" />
                 </ui:SettingsCard.HeaderIcon>
 
-                <ComboBox
-                    MaxWidth="200"
-                    Margin="10 0 0 0"
-                    DisplayMemberPath="Display"
-                    ItemsSource="{Binding Languages}"
-                    SelectedValue="{Binding Language}"
-                    SelectedValuePath="LanguageCode" />
+                <StackPanel Orientation="Horizontal">
+                    <ui:HyperlinkButton Content="{DynamicResource HelpUsTranslateFlow}" NavigateUri="{Binding Crowdin}" />
+                    <ComboBox
+                        MaxWidth="200"
+                        Margin="10 0 0 0"
+                        DisplayMemberPath="Display"
+                        ItemsSource="{Binding Languages}"
+                        SelectedValue="{Binding Language}"
+                        SelectedValuePath="LanguageCode" />
+                </StackPanel>
             </ui:SettingsCard>
             <Border Visibility="{Binding KoreanIMERegistryKeyExists, Converter={StaticResource BoolToVisibilityConverter}}">
                 <ui:InfoBar