Endpoint\Client: Add lastUsed value to tests & code examples (#271)

Author: VerifiedJoseph

examples/Client/get.php

@@ -25,6 +25,7 @@
         echo 'Id: ' . $details->id . PHP_EOL;
         echo 'Name: ' . $details->name . PHP_EOL;
         echo 'Token: ' . $details->token . PHP_EOL;
+        echo 'Last used: ' . $details->lastUsed . PHP_EOL;
         echo PHP_EOL;
     }
 } catch (EndpointException | GotifyException $err) {

tests/Endpoints/ClientTest.php

@@ -59,6 +59,7 @@ public function testGetAll(): void
             $this->assertObjectHasProperty('id', $client);
             $this->assertObjectHasProperty('name', $client);
             $this->assertObjectHasProperty('token', $client);
+            $this->assertObjectHasProperty('lastUsed', $client);
         }
     }