[DBTech] Preview Last Post 1.2.0

This addon should now be fully updated for XenForo 2.3.

Update highlights:

!!!This version requires PHP 7.4+!!!
This version refactors some backend code as well as fixing a compatibility issue with PHP 8.4.

Complete Change Log:

Change: Refactored backend code
Change: Bump minimum PHP version to 7.4 and recommended version to 8.2
Fix: Fix PHP 8.4 compatibility issue