feat: Implement financial engine for commission and tax calculations

- Added new configuration keys for appointment and upgrade commissions, tax settings, and SMS panel fee in SiteConfigController and SiteConfigRepository.
- Introduced CommissionService to handle commission calculations for appointments and subscriptions, including tax deductions and SMS fees.
- Created FinancialBreakdown entity and repository to log financial transactions.
- Updated PaymentController to process commissions upon successful payments for appointments and subscriptions.
- Developed FinancialReportPage in the admin panel to display financial breakdowns and summaries.
- Added database migration for the new financial_breakdowns table.

src/Config/Controller/SiteConfigController.php

@@ -18,6 +18,13 @@ class SiteConfigController extends BaseController
     private const ALLOWED_KEYS = [
         'commission_enabled',
         'commission_percent',
+        // financial engine
+        'appointment_commission_enabled',
+        'upgrade_commission_enabled',
+        'upgrade_commission_percent',
+        'tax_enabled',
+        'tax_percent',
+        'sms_panel_fee_rials',
         'site_name',
         'support_phone',
         'max_cancel_hours_before',