output countries in settings

zero.Web/Controllers/CountriesController.cs

@@ -0,0 +1,25 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using System.Threading.Tasks;
+using zero.Core;
+using zero.Core.Api;
+
+namespace zero.Web.Controllers
+{
+  [AllowAnonymous]
+  public class CountriesController : BackofficeController
+  {
+    private ICountriesApi Api { get; set; }
+
+    public CountriesController(IZeroConfiguration config, ICountriesApi api) : base(config)
+    {
+      Api = api;
+    }
+
+
+    public async Task<IActionResult> GetAll()
+    {
+      return Json(await Api.GetAll("en-US"));
+    }
+  }
+}