[DBTech] DragonByte Stripe Checkout 2.0.1

* **Fix:** Fix the options not loading correctly *2024-08-20*

This version removes the "Recurring" support, as this is now natively added to XenForo 2.3. This add-on has also been updated with support for the updated Stripe payment profile handler.

Complete Change Log​

Change: Update for compatibility with XF 2.3's built-in Stripe Checkout
Change: Remove "Recurring" flag
Change: Updated macros to XF 2.3 format
Change: Replace various references with class-string<T> equivalents
Change: Update code for PHP 8.0
Fix: Fixed template modifications

Update highlights

This version adds !!!EXPERIMENTAL!!! support for recurring subscriptions using Stripe Checkout.
!!!DO NOT ATTEMPT THIS USING LIVE PAYMENTS UNTIL YOU HAVE COMPLETED A SUBSCRIPTION IN STRIPE'S "TEST MODE"!!!
I take absolutely no responsibility for any lost revenue if you decide to just throw this live without testing it! I have successfully completed payments using Stripe's "Test Mode", but I haven't tested whether the webhook will actually successfully ping your site and grant users their subscriptions.

Complete Change Log

Feature: Experimental recurring payment support