restore composer.json, add mysqli extension

app/Http/Requests/Dashboard/File/Store.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Http\Requests\Dashboard\File;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class Store extends FormRequest
+{
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'file' => 'required|mimes:jpg,png,jpeg'
+        ];
+    }
+}