feat: Introduce client management and integration updates

- Added client_id field to StoreTenantRequest and UpdateTenantRequest for tenant management.
- Updated TenantResource to include client_id in the response.
- Created migration to establish clients table and link tenants to clients.
- Migrated existing tenant integrations to client_integrations table.
- Grouped specific tenants under a shared client (OnTicket) in a new migration.
- Updated seeders to reflect new client structure and relationships.
- Adjusted integration configurations to require client instead of tenant.
- Added tests for client integration functionality and ensured existing tests reflect the new client structure.

app/Domains/Client/Resources/ClientResource.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Domains\Client\Resources;
+
+use App\Domains\Client\Models\Client;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+/** @mixin Client */
+class ClientResource extends JsonResource
+{
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->id,
+            'code' => $this->code,
+            'name' => $this->name,
+            'tenants' => $this->whenLoaded('tenants', fn () => $this->tenants->map(fn ($tenant): array => [
+                'id' => $tenant->id,
+                'codigo' => $tenant->codigo,
+                'nombre' => $tenant->nombre,
+                'dominio' => $tenant->dominio,
+            ])),
+        ];
+    }
+}