Move vaCentral config to its own config file and ServiceProvider

config/app.php

@@ -84,6 +84,7 @@ return [
         App\Providers\AuthServiceProvider::class,
         App\Providers\EventServiceProvider::class,
         App\Providers\RouteServiceProvider::class,
+        App\Providers\vaCentralServiceProvider::class,
     ],
 
     'aliases' => [

config/vacentral.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * vaCentral Configurations
+ */
+
+return [
+    /**
+     * Your vaCentral API key
+     */
+    'api_key' => env('VACENTRAL_API_KEY', ''),
+
+    /**
+     * vaCentral API URL. You likely don't need to change this
+     */
+    'api_url' => 'https://api.vacentral.net',
+];