Add initial Login page and controller action

Helios/Controllers/HomeController.cs

@@ -23,6 +23,11 @@ public class HomeController : Controller
         return View();
     }
 
+    public IActionResult Login()
+    {
+        return View();
+    }
+
     [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
     public IActionResult Error()
     {

Helios/Views/Home/Login.cshtml

+@{
+    ViewData["Title"] = "Login";
+}
+
+<h1>Welcome to the login page!</h1>
\ No newline at end of file

Helios/Views/Shared/_Layout.cshtml

@@ -25,6 +25,9 @@
                         <li class="nav-item">
                             <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
                         </li>
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Login">Login</a>
+                        </li>
                     </ul>
                 </div>
             </div>