Add simple auth

WebApp/Authentication/AuthController.cs

@@ -0,0 +1,36 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using System.Security.Claims;
+using Microsoft.AspNetCore.Authentication;
+
+namespace WebApp.Authentication
+{
+    public class AuthController : Controller
+    {
+        [HttpPost]
+        [AllowAnonymous]
+        public async Task<IActionResult> CookieLogin()
+        {
+            // Based on: https://www.codeproject.com/articles/Understanding-authentication-in-Blazor-and-ASP-NET
+            // TODO: Fix this up
+            // Generate the claims
+            var claims = new List<Claim>();
+            claims.Add(new Claim(ClaimTypes.Name, "John Patton"));
+            claims.Add(new Claim(ClaimTypes.Role, "Contributor"));
+
+            var principal = new ClaimsPrincipal(new ClaimsIdentity(claims, "Auth"));
+
+            await HttpContext.SignInAsync("Auth", principal).ConfigureAwait(false);
+
+            return Redirect("/");
+        }
+
+        [HttpPost]
+        public async Task<IActionResult> CookieLogout()
+        {
+            await HttpContext.SignOutAsync("Auth").ConfigureAwait(false);
+
+            return Redirect("/login");
+        }
+    }
+}