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/Integration/Controllers/ClientIntegrationController.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace App\Domains\Integration\Controllers;
+
+use App\Domains\Client\Models\Client;
+use App\Domains\Integration\Models\Integration;
+use App\Domains\Integration\Requests\StoreClientIntegrationRequest;
+use App\Domains\Integration\Services\ClientIntegrationService;
+use App\Http\Controllers\Controller;
+use Illuminate\Http\JsonResponse;
+
+class ClientIntegrationController extends Controller
+{
+    public function __construct(
+        private readonly ClientIntegrationService $clientIntegrationService,
+    ) {}
+
+    public function index(Client $client): JsonResponse
+    {
+        return response()->json($this->clientIntegrationService->getAllForClient($client));
+    }
+
+    public function show(Client $client, string $integrationCode): JsonResponse
+    {
+        $integration = $this->clientIntegrationService->getClientIntegration($client, $integrationCode);
+
+        if (! $integration) {
+            return response()->json([
+                'code' => 'integration.not_configured',
+                'message' => __('api.integration.not_configured'),
+            ], 404);
+        }
+
+        return response()->json($integration);
+    }
+
+    public function store(
+        StoreClientIntegrationRequest $request,
+        Client $client,
+        string $integrationCode,
+    ): JsonResponse {
+        $integration = Integration::query()
+            ->where('integration_code', $integrationCode)
+            ->firstOrFail();
+
+        try {
+            $this->clientIntegrationService->updateOrCreateIntegration(
+                $client,
+                $integration,
+                $request->input('integration_data', []),
+            );
+
+            return response()->json([
+                'code' => 'integration.configured',
+                'message' => __('api.integration.configured'),
+            ]);
+        } catch (\Exception $exception) {
+            return response()->json([
+                'code' => 'integration.validation_failed',
+                'message' => __('api.integration.validation_failed', ['error' => $exception->getMessage()]),
+            ], 400);
+        }
+    }
+}