Adds configuration skeleton for adapter

Author: weierophinney

src/ConfigProvider.php

@@ -12,10 +12,18 @@ class ConfigProvider
     public function __invoke() : array
     {
         return [
+            'authentication' => $this->getAuthenticationConfig(),
             'dependencies' => $this->getDependencies(),
         ];
     }
 
+    public function getAuthenticationConfig() : array
+    {
+        return [
+            'realm' => '', // Provide the realm string
+        ];
+    }
+
     public function getDependencies() : array
     {
         return [