add Laravel Orchid integration

source/docs/v3/integrations/orchid.blade.md

@@ -0,0 +1,42 @@
+---
+title: Laravel Orchid integration
+extends: _layouts.documentation
+section: content
+---
+
+# Laravel Orchid {#laravel-orchid}
+The instruction is written for a newly installed Orchid platform, it is proposed to use the platform as a central application and the tenant app.
+
+## Both in the central app and the tenant app
+
+Laravel Orchid has already been installed according to the [documentation Orchid](https://orchid.software/en/docs/installation/). All the steps have also been completed [Quickstart Tutorial](/docs/v3/quickstart).
+
+- To use Orchid both in the central & tenant parts you need to enable [Universal Routes](docs/v3/features/universal-routes).
+- Add the tenancy middleware to your `config\platform.php`
+    ```php
+    'middleware' => [
+        'public'  => ['web', 'universal', \Stancl\Tenancy\Middleware\InitializeTenancyByDomain::class],
+        'private' => ['web', 'platform', 'universal', \Stancl\Tenancy\Middleware\InitializeTenancyByDomain::class],
+    ],
+    ```
+- Add a route to `routes\platform.php`
+    ```php
+    Route::screen('/', PlatformScreen::class)
+    ->name('platform.index')
+    ->breadcrumbs(function (Trail $trail) {
+        return $trail->push(__('Home'), route('platform.index'));
+    });
+     ```
+- Tenant Routes `routes\tenant.php`
+    ```php
+    Route::middleware([
+        'web',
+        'platform',
+        InitializeTenancyByDomain::class,
+        PreventAccessFromCentralDomains::class,
+    ])->prefix('admin')->group(function () {
+        Route::get('/', function () {
+            return 'This is your multi-tenant application. The id of the current tenant is ' . tenant('id');
+        });
+    });
+     ```