Add new admin area thing to dump config

Author: leotsarev

src/JoinRpg.Portal/Areas/Admin/Controllers/DumpConfigController.cs

@@ -0,0 +1,22 @@
+using JoinRpg.Portal.Infrastructure.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Configuration;
+
+namespace JoinRpg.Portal.Areas.Admin.Controllers
+{
+    [AdminAuthorize]
+    [Area("Admin")]
+    public class DumpConfigController : Controller
+    {
+        private readonly IConfiguration configuration;
+
+        public DumpConfigController(IConfiguration configuration)
+            => this.configuration = configuration;
+
+        public IActionResult Index()
+        {
+            var config = (configuration as IConfigurationRoot).GetDebugView();
+            return Content(config);
+        }
+    }
+}

src/JoinRpg.Portal/Areas/Admin/Views/AdminHome/Index.cshtml

@@ -5,4 +5,5 @@
 <ul>
     <li><a asp-controller="ProjectList">Список активных игр</a></li>
     <li>@Html.ActionLink("Проблемные проекты", "StaleGames", "AdminHome") </li>
+    <li><a asp-controller="DumpConfig">Конфигурация (для отладки)</a></li>
 </ul>