Add Bookings & Revenue reporting module

New modules/reporting Filament page: filterable bookings table (travel
date range, status, route, channel) with CSV/Excel export. Report
columns include booking ref, route, passenger name/count, price,
best-payment status/amount, and driver info, plus a TOTAL row summing
passenger count, price, and payment amount in both export formats.

- BookingsRevenueExport backs both CSV and XLSX via maatwebsite/excel
  ^4.0 (the only version compatible with PHP 8.5; 3.1.x caps
  phpoffice/phpspreadsheet below 8.5).
- CSV export writes a UTF-8 BOM so non-Latin passenger names (Burmese)
  open correctly in Excel.
- New view_reports permission (super_admin/admin/support) gates the
  page; new indexes on bookings.travel_date/status/created_by_channel
  and payments.completed_at support the report's filters.

app-modules/reporting/src/ReportingPlugin.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Modules\Reporting;
+
+use Filament\Contracts\Plugin;
+use Filament\Panel;
+
+class ReportingPlugin implements Plugin
+{
+    public function getId(): string
+    {
+        return 'reporting';
+    }
+
+    public function register(Panel $panel): void
+    {
+        $panel->discoverPages(
+            in: __DIR__.'/Filament/Pages',
+            for: 'Modules\Reporting\Filament\Pages',
+        );
+    }
+
+    public function boot(Panel $panel): void {}
+
+    public static function make(): static
+    {
+        return app(static::class);
+    }
+}