Refactor Authentication and add proxy-authentication (#921)

* Refactor Authentication-Middlewares

* Add Proxy-Authentication

* Disable "Logout" & "Manage Users" when using ProxyAuth

* Review

Co-authored-by: Bernd Bestel <bernd@berrnd.de>

middleware/DefaultAuthMiddleware.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Grocy\Middleware;
+
+use Psr\Http\Message\ServerRequestInterface as Request;
+
+class DefaultAuthMiddleware extends AuthMiddleware
+{
+    protected function authenticate(Request $request)
+    {
+        // First try to authenticate by API key
+        $auth = new ApiKeyAuthMiddleware($this->AppContainer, $this->ResponseFactory);
+        $user = $auth->authenticate($request);
+        if ($user !== null)
+        {
+            return $user;
+        }
+
+        // Then by session cookie
+        $auth = new SessionAuthMiddleware($this->AppContainer, $this->ResponseFactory);
+        $user = $auth->authenticate($request);
+        return $user;
+    }
+}