feat: Reimplement order and invoice management with new service and repository layers, introduce compression middleware, and update database schema.

app/Http/Helpers/function_helper.php

@@ -72,7 +72,7 @@ if (!function_exists('user')) {
     }
 }
 
-if (!function_exists('generate_order_number')) {
+if (!function_exists('generate_order_num')) {
     /**
      * Generate a unique order number with given prefix
      *
@@ -80,7 +80,7 @@ if (!function_exists('generate_order_number')) {
      * @param int $length Length of random number (default 6)
      * @return string Unique order number
      */
-    function generate_order_number(string $prefix = 'TGS', int $length = 6): string
+    function generate_order_num(string $prefix = 'TGS', int $length = 6): string
     {
         do {
             $randomNumber = random_int(10 ** ($length - 1), (10 ** $length) - 1);