refactor(integration): generalizar el requisito de configuracion

Renombra requires_client_configuration a requires_configuration conservando los valores existentes y su rollback. Actualiza el modelo, la validacion, los seeders y los consumidores del campo para permitir configuraciones de cliente o tipo de sitio.

tests/Feature/Integration/MailServiceTest.php

@@ -65,7 +65,7 @@ class MailServiceTest extends TestCase
         Integration::create([
             'integration_code' => 'email',
             'name' => 'Email',
-            'requires_client_configuration' => false,
+            'requires_configuration' => false,
         ]);
 
         $service = (new MailService)->forTenant($tenant->codigo);

tests/Feature/Notification/NotificationMailServiceTest.php

@@ -35,7 +35,7 @@ class NotificationMailServiceTest extends TestCase
             'integration_code' => 'email',
             'name' => 'Email',
             'url' => null,
-            'requires_client_configuration' => false,
+            'requires_configuration' => false,
             'integration_data_schema' => [],
         ]);
         $header = Attachment::query()->create([

tests/Unit/IntegrationInstanceSchemaTest.php

@@ -53,6 +53,9 @@ class IntegrationInstanceSchemaTest extends TestCase
             $table->string('codigo')->unique();
         });
         (require __DIR__.'/../../database/migrations/2026_07_03_000001_create_integrations_table.php')->up();
+        $schema->table('integrations', function (Blueprint $table): void {
+            $table->boolean('requires_client_configuration')->default(true);
+        });
         $schema->create('client_integrations', function (Blueprint $table): void {
             $table->id();
             $table->foreignId('client_id')->constrained('clients')->cascadeOnDelete();