restore composer.json, add mysqli extension

app/Http/Requests/Api/Firebase/Request.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Http\Requests\Api\Firebase;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class Request extends FormRequest
+{
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'device_id' => 'required',
+            'device_token' => 'required',
+            'device_type' => 'required',
+            'device_name' => 'required',
+        ];
+    }
+}