Rename plugins to libs and update all file references

plugins/vendor/illuminate/contracts/Foundation/CachesRoutes.php

@@ -1,20 +0,0 @@
-<?php
-
-namespace Illuminate\Contracts\Foundation;
-
-interface CachesRoutes
-{
-    /**
-     * Determine if the application routes are cached.
-     *
-     * @return bool
-     */
-    public function routesAreCached();
-
-    /**
-     * Get the path to the routes cache file.
-     *
-     * @return string
-     */
-    public function getCachedRoutesPath();
-}