FEATURE #1442: add uploaded file detail

This commit adds functionality for editing keywords and description of selected file. This commit also includes JS library for syntax highlighting (https://highlighjs.org)

app/Events/EditFile.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Events;
+
+use App\Events\Event;
+use App\Models\File;
+use Illuminate\Queue\SerializesModels;
+use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
+
+class EditFile extends Event
+{
+    use SerializesModels;
+    /**
+     * @var File
+     */
+    public $file;
+
+    /**
+     * Create a new event instance.
+     *
+     * @param File $file
+     */
+    public function __construct(File $file)
+    {
+        //
+        $this->file = $file;
+    }
+
+    /**
+     * Get the channels the event should be broadcast on.
+     *
+     * @return array
+     */
+    public function broadcastOn()
+    {
+        return [];
+    }
+}