add print layouts Api method + readme

Author: Sysix

README.md

@@ -183,6 +183,11 @@ $response = $api->paymentCondition()->getAll();
 $response = $api->postingCategory()->getAll();
 ```
 
+### Print Layouts Endpoint
+```php
+$response = $api->printLayout()->getAll();
+```
+
 ### Profile Endpoint
 ```php
 $response = $api->profile()->get();

src/Api.php

@@ -24,6 +24,7 @@
 use Sysix\LexOffice\Clients\Payment;
 use Sysix\LexOffice\Clients\PaymentCondition;
 use Sysix\LexOffice\Clients\PostingCategory;
+use Sysix\LexOffice\Clients\PrintLayout;
 use Sysix\LexOffice\Clients\Profile;
 use Sysix\LexOffice\Clients\Quotation;
 use Sysix\LexOffice\Clients\RecurringTemplate;
@@ -149,6 +150,11 @@ public function postingCategory(): PostingCategory
         return new PostingCategory($this);
     }
 
+    public function printLayout(): PrintLayout
+    {
+        return new PrintLayout($this);
+    }
+
     public function profile(): Profile
     {
         return new Profile($this);

tests/ApiTest.php

@@ -19,6 +19,7 @@
 use Sysix\LexOffice\Clients\Payment;
 use Sysix\LexOffice\Clients\PaymentCondition;
 use Sysix\LexOffice\Clients\PostingCategory;
+use Sysix\LexOffice\Clients\PrintLayout;
 use Sysix\LexOffice\Clients\Profile;
 use Sysix\LexOffice\Clients\Quotation;
 use Sysix\LexOffice\Clients\RecurringTemplate;
@@ -52,6 +53,7 @@ public function testClients(): void
         $this->assertInstanceOf(Payment::class, $stub->payment());
         $this->assertInstanceOf(PaymentCondition::class, $stub->paymentCondition());
         $this->assertInstanceOf(PostingCategory::class, $stub->postingCategory());
+        $this->assertInstanceOf(PrintLayout::class, $stub->printLayout());
         $this->assertInstanceOf(Profile::class, $stub->profile());
         $this->assertInstanceOf(Quotation::class, $stub->quotation());
         $this->assertInstanceOf(RecurringTemplate::class, $stub->recurringTemplate());