feat: Enhance software tool with country selection and tax calculation

- Added a helper function to generate country select options in software tool.
- Updated user info modal and payment modal to use country dropdowns instead of text inputs.
- Implemented tax calculation based on selected country in payment modal.
- Improved software options loading behavior in debug mode.
- Enhanced description formatting in payment modal.
- Added log modal for equipment updates with a link to view logs.
- Introduced a new countries settings file with tax rates for various countries.
- Minor adjustments to various PHP files for better handling of equipment and payment processes.

index.php

@@ -15,9 +15,21 @@ if (debug && debug_id == $_SESSION['id']){
     error_reporting(E_ALL);  
 }
 
+if (debug){
+    set_error_handler(function($errno, $errstr, $errfile, $errline) {
+    debuglog("PHP ERROR [$errno]: $errstr in $errfile on line $errline");
+    return false; 
+    });
+
+    set_exception_handler(function($exception) {
+        debuglog("PHP EXCEPTION: " . $exception->getMessage() . " in " . $exception->getFile() . " on line " . $exception->getLine());
+    });
+}
+
 //INCLUDE FUNCTIONS AND SETTINGS
 include dirname(__FILE__).'/assets/functions.php';
 include dirname(__FILE__).'/settings/settings_redirector.php';
+include_once dirname(__FILE__).'/settings/countries.php';
 
 //=====================================
 //TRANSLATION FILE LOCATION