Perfmatters 2.3.4

* Reworked the majority of the UI to use WordPress AJAX to save data and perform plugin actions.
* Renamed Bricks Delay JS quick exclusion, as it can be used to target more than just their slider.
* Adjusted clean_html utility function regex to better handle large inline data scripts.
* Added skip-lazy class to built-in lazy loading exclusions.
* Added right-to-left admin styles for better usability on RTL sites.
* Fixed an issue where certain HTML characters would not print correctly when saved in a fetch priority selector input field.
* Fixed an issue where fetch priority selectors would sometimes not get the correct priority applied when set to low.
* Fixed a typo in the fetch priority tooltip.
* Updated background processing library to version 1.1.1.
* Translation updates.

Added new preload option to add the Fetch Priority attribute to different resources on the site to help improve LCP.
Added built-in lazy loading exclusion for fetchpriority attribute.
Added Delay JS quick exclusion for Termageddon + Usercentrics.
Switched individual JS delay to use the same inline script as delay all to take advantage of delayed triggering of event listeners.
Fixed an issue where an empty notice was appearing when a database optimization process completed.
Fixed an issue with critical image preloads where an image with an empty src attribute would prevent other similar ones from being added on the same URL.
UI improvements to input row sections.

* Fixed an issue that was preventing existing Script Manager settings from showing up in certain instances.
* Translation updates.