Move network_protocol up in the config object and document available protocols

Author: maximetassy

README.md

@@ -513,6 +513,7 @@ If for some reason you don't want the connection lazy you can turn it off by set
 
 By default, the network protocol used for connection is tcp.
 If for some reason you want to use another network protocol, you can add the extra value in your config options.
+Available protocols : `tcp`, `ssl`, `tls`
 
 ```php
 'connections' => [
@@ -521,11 +522,7 @@ If for some reason you want to use another network protocol, you can add the ext
     'rabbitmq' => [
         // ...
 
-        'options' => [
-            // ...
-
-            'network_protocol' => 'network wanted',
-        ],
+        'network_protocol' => 'tcp',
     ],
 
     // ...    

src/Queue/Connection/ConfigFactory.php

@@ -94,7 +94,7 @@ protected static function getHeartbeatFromConfig(AMQPConnectionConfig $connectio
 
     protected static function getNetworkProtocolFromConfig(AMQPConnectionConfig $connectionConfig, array $config): void
     {
-        if ($networkProtocol = Arr::get($config, self::CONFIG_OPTIONS.'.network_protocol')) {
+        if ($networkProtocol = Arr::get($config, 'network_protocol')) {
             $connectionConfig->setNetworkProtocol($networkProtocol);
         }
     }