Rename plugins to libs and update all file references

libs/stripe-php/lib/ReserveTransaction.php

@@ -0,0 +1,17 @@
+<?php
+
+// File generated from our OpenAPI spec
+
+namespace Stripe;
+
+/**
+ * @property string $id Unique identifier for the object.
+ * @property string $object String representing the object's type. Objects of the same type share the same value.
+ * @property int $amount
+ * @property string $currency Three-letter <a href="https://www.iso.org/iso-4217-currency-codes.html">ISO currency code</a>, in lowercase. Must be a <a href="https://stripe.com/docs/currencies">supported currency</a>.
+ * @property null|string $description An arbitrary string attached to the object. Often useful for displaying to users.
+ */
+class ReserveTransaction extends ApiResource
+{
+    const OBJECT_NAME = 'reserve_transaction';
+}