Tiered Pricing Table for WooCommerce 7.0.2

* Update: Minor enhancements.

* New: Show tiered pricing block in the product catalog.
* New: Compatibility with the new WooCommerce react-based product editor.
* New: New API for the tiered pricing fields.
* New: Integration with Addify Request a Quote plugin.
* Update: Frontend script updated.
* Update: New hooks.
* Update: Removed legacy hooks support.
* Update: WooCommerce & WordPress compatibility.
* Update: Other minor enhancements.
* Fix: Allow minimum quantity to be set to null.
* Fix: Plaintext template variables issue.
* Fix: Custom columns: total column always shows the price with taxes.

* New: New feature to handle non-logged in users (hide prices and prevent adding to cart).
* New: Integration with Wombat Product Addons (Free version).
* Fix: Notice in 8.0+ PHP versions.
* Fix: Minor issues and improvements.
* Update: WooCommerce & WordPress compatibility.