move all into clusters

app/Filament/Clusters/StaticData/Resources/Countries/Pages/ManageCountries.php

@@ -0,0 +1,11 @@
+<?php
+
+namespace App\Filament\Clusters\StaticData\Resources\Countries\Pages;
+
+use App\Filament\Clusters\StaticData\Resources\Countries\CountryResource;
+use Filament\Resources\Pages\ManageRecords;
+
+class ManageCountries extends ManageRecords
+{
+    protected static string $resource = CountryResource::class;
+}