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.

api.php

@@ -1,6 +1,7 @@
 <?php
 define('secure_34563$52', true);
 
+
 //------------------------------------------
 // Get DATA from API
 //------------------------------------------   
@@ -16,6 +17,17 @@ require_once './assets/functions.php';
 include './settings/settings_redirector.php';
 include './settings/config_redirector.php';
 
+if (debug){
+    set_error_handler(function($errno, $errstr, $errfile, $errline) {
+    debuglog("PHP ERROR [$errno]: $errstr in $errfile on line $errline");
+    return false; // Let PHP handle as usual (optional)
+    });
+
+    set_exception_handler(function($exception) {
+        debuglog("PHP EXCEPTION: " . $exception->getMessage() . " in " . $exception->getFile() . " on line " . $exception->getLine());
+    });
+}
+
 //------------------------------------------
 // Header security - enabled via config
 //------------------------------------------