Update repository base code to be cleaner and make use of PHP 7 features

app/Contracts/Repository/SessionRepositoryInterface.php

@@ -1,16 +1,19 @@
 <?php
-/**
- * Pterodactyl - Panel
- * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
- *
- * This software is licensed under the terms of the MIT license.
- * https://opensource.org/licenses/MIT
- */
 
 namespace Pterodactyl\Contracts\Repository;
 
+use Illuminate\Support\Collection;
+
 interface SessionRepositoryInterface extends RepositoryInterface
 {
+    /**
+     * Return all of the active sessions for a user.
+     *
+     * @param int $user
+     * @return \Illuminate\Support\Collection
+     */
+    public function getUserSessions(int $user): Collection;
+
     /**
      * Delete a session for a given user.
      *
@@ -18,13 +21,5 @@ interface SessionRepositoryInterface extends RepositoryInterface
      * @param int $session
      * @return null|int
      */
-    public function deleteUserSession($user, $session);
-
-    /**
-     * Return all of the active sessions for a user.
-     *
-     * @param int $user
-     * @return \Illuminate\Support\Collection
-     */
-    public function getUserSessions($user);
+    public function deleteUserSession(int $user, int $session);
 }