define supported ui cultures/languages in a single location

ErsatzTV/Localization.cs

@@ -0,0 +1,17 @@
+namespace ErsatzTV;
+
+public static class Localization
+{
+    public static readonly List<CultureLanguage> SupportedLanguages =
+    [
+        new("en-us", "English"),
+        new("pl", "Polski"),
+        new("pt-br", "Português (Brasil)")
+    ];
+
+    public static string DefaultCulture => "en-us";
+
+    public static string[] UiCultures => SupportedLanguages.Map(cl => cl.Culture).ToArray();
+
+    public sealed record CultureLanguage(string Culture, string Language);
+}

ErsatzTV/Pages/Settings/UISettings.razor

@@ -29,9 +29,10 @@
                     <MudText>Language</MudText>
                 </div>
                 <MudSelect @bind-Value="_uiSettings.Language">
-                    <MudSelectItem Value="@("en-us")">English</MudSelectItem>
-                    <MudSelectItem Value="@("pl")">Polski</MudSelectItem>
-                    <MudSelectItem Value="@("pt-br")">Português (Brasil)</MudSelectItem>
+                    @foreach (Localization.CultureLanguage cultureLanguage in Localization.SupportedLanguages)
+                    {
+                        <MudSelectItem Value="@cultureLanguage.Culture">@cultureLanguage.Language</MudSelectItem>
+                    }
                 </MudSelect>
             </MudStack>
         </MudContainer>

ErsatzTV/Startup.cs

@@ -605,10 +605,9 @@ public class Startup
         {
             CultureInfo[] cinfo = CultureInfo.GetCultures(CultureTypes.AllCultures & ~CultureTypes.NeutralCultures);
             string[] supportedCultures = cinfo.Select(t => t.Name).Distinct().ToArray();
-            string[] supportedUiCultures = ["en-us", "pl", "pt-br"];
             options.AddSupportedCultures(supportedCultures)
-                .AddSupportedUICultures(supportedUiCultures)
-                .SetDefaultCulture("en-us");
+                .AddSupportedUICultures(Localization.UiCultures)
+                .SetDefaultCulture(Localization.DefaultCulture);
             options.AddInitialRequestCultureProvider(
                 new DatabaseRequestCultureProvider(
                     new AcceptLanguageHeaderRequestCultureProvider()));