VP Conversion Tracking 4.0

• Made compatible with Joomla 5.
• Added the "view_item", "add_to_cart", and "remove_from_cart" events tracking options for Google e-commerce.
• Added the "AddToCart" event tracking option for Facebook Pixel.
• Added custom product view tracking option.
• Overhauled e-commerce tracking for the latest Google Analytics 4 (GA4).
• Removed outdated analytics.js option for e-commerce tracking.
• Fixed compatibility issues with the latest VirtueMart 4.4.x.
• Fixed compatibility issues with PHP 8.2.

• Fixed a URL routing bug with Joomla 4.
• Updated as per the changes in VirtueMart 4.