Use Symfony HttpClient by default if available

Author: norkunas

src/Resources/config/services.xml

@@ -20,6 +20,7 @@
         <service id="search.client" class="MeiliSearch\Client" public="true" lazy="true">
             <argument key="$url">%meili_url%</argument>
             <argument key="$apiKey">%meili_api_key%</argument>
+            <argument key="$httpClient" type="service" id="psr18.http_client" on-invalid="ignore" />
         </service>
 
         <service id="MeiliSearch\Client" alias="search.client"/>