Rename plugins to libs and update all file references

libs/vendor/illuminate/contracts/Database/Eloquent/Builder.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace Illuminate\Contracts\Database\Eloquent;
+
+use Illuminate\Contracts\Database\Query\Builder as BaseContract;
+
+/**
+ * This interface is intentionally empty and exists to improve IDE support.
+ *
+ * @mixin \Illuminate\Database\Eloquent\Builder
+ */
+interface Builder extends BaseContract
+{
+}