Rework tests structure. Upgrade codeception to 2.5.3. Merge params configuration into app configuration.

api/config/config-test.php

@@ -0,0 +1,26 @@
+<?php
+return [
+    'components' => [
+        'user' => [
+            'secret' => 'tests-secret-key',
+        ],
+        'reCaptcha' => [
+            'public' => 'public-key',
+            'secret' => 'private-key',
+        ],
+    ],
+    'params' => [
+        'authserverHost' => 'localhost',
+    ],
+    'container' => [
+        'definitions' => [
+            api\components\ReCaptcha\Validator::class => function() {
+                return new class(new GuzzleHttp\Client()) extends api\components\ReCaptcha\Validator {
+                    protected function validateValue($value) {
+                        return null;
+                    }
+                };
+            },
+        ],
+    ],
+];