Added TeamFile Authorization Policy

app/Policies/TeamFilePolicy.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace App\Policies;
+
+use App\Team;
+use App\User;
+use Illuminate\Auth\Access\HandlesAuthorization;
+
+class TeamFilePolicy
+{
+    use HandlesAuthorization;
+
+    /**
+     * Create a new policy instance.
+     *
+     * @return void
+     */
+    public function __construct()
+    {
+        //
+    }
+
+    public function index(User $user)
+    {
+        return $user->hasPermissionTo('teams.files.view');
+    }
+
+    public function store(User $user, Team $team)
+    {
+        return $user->hasPermissionTo('teams.files.upload') || $user->hasTeam($team);
+    }
+
+    public function download(User $user)
+    {
+        return $user->hasPermissionTo('teams.files.download');
+    }
+
+    public function delete(User $user)
+    {
+        return $user->hasPermissionTo('teams.files.delete');
+    }
+}