Add LocalizationService APIs

Oqtane.Client/Services/Interfaces/ILocalizationService.cs

@@ -0,0 +1,11 @@
+using System.Threading.Tasks;
+
+namespace Oqtane.Services
+{
+    public interface ILocalizationService
+    {
+        Task<string> GetDefaultCulture();
+
+        Task<string[]> GetSupportedCultures();
+    }
+}

Oqtane.Client/Services/LocalizationService.cs

@@ -0,0 +1,22 @@
+using System.Net.Http;
+using System.Threading.Tasks;
+using Oqtane.Shared;
+
+namespace Oqtane.Services
+{
+    public class LocalizationService : ServiceBase, ILocalizationService
+    {
+        private readonly SiteState _siteState;
+
+        public LocalizationService(HttpClient http, SiteState siteState) : base(http)
+        {
+            _siteState = siteState;
+        }
+
+        private string Apiurl => CreateApiUrl(_siteState.Alias, "Localization");
+
+        public async Task<string> GetDefaultCulture() => await GetJsonAsync<string>($"{Apiurl}/getDefaultCulture");
+
+        public async Task<string[]> GetSupportedCultures() => await GetJsonAsync<string[]>($"{Apiurl}/getSupportedCultures");
+    }
+}