YITH WooCommerce Ajax Product Filter Premium 5.9.0

* New: support for WooCommerce 7.3
* Update: updated Readme
* Update: YITH plugin framework
* Fix: avoid price slider to trigger immediate filtering after handle drag
* Fix: removed deprecated method used for Elementor compatibility
* Dev: added new filter yith_wcan_get_filters

New: support for WooCommerce 6.8
New: added Bricks compatibility
Tweak: add rel=nofollow attribute to items inside dropdowns handled by plugin js
Update: YITH plugin framework
Dev: added yith_wcan_custom_css filter
Dev: added new filter yith_wcan_set_supported_filter_design
Dev: Removed 3rd party CSS libraries not strictly needed in the plugin
Dev: new filter yith_wcan_filter_get_formatted_terms_for_{->get_formatted_taxonomy()} for filter specific taxonomy before print

New: support for WooCommerce 5.8
Tweak: init custom fields inside dropdown too
Update: YITH Plugin Framework
Dev: added yith_wcan_is_filtered filter