feature #49813 [Messenger][Process] add RunProcessMessage and RunProcessMessageHandler (kbond)

This PR was squashed before being merged into the 6.4 branch.

Discussion
----------

[Messenger][Process] add `RunProcessMessage` and `RunProcessMessageHandler`

| Q             | A
| ------------- | ---
| Branch?       | 6.3
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no
| Tickets       | n/a
| License       | MIT
| Doc PR        | todo

When reviewing how I could replace my cron scheduler with symfony/scheduler, I realized I need a way to schedule processes.

## Usage

```php
use Symfony\Component\Process\Exception\RunProcessFailedException;
use Symfony\Component\Process\Messenger\RunProcessMessage;

try {
    $context = $bus->dispatch(new RunProcessMessage('something'));

    $context->exitCode; // int
    $context->output; // string
    $context->errorOutput; // string
catch(RunProcessFailedException $e) {
    $e->context->exitCode; // int
    $e->context->output; // string
    $e->context->errorOutput; // string
}
```

TODO:
- [x] wire up
- [x] tests

Commits
-------

abde61a807 [Messenger][Process] add `RunProcessMessage` and `RunProcessMessageHandler`

Author: fabpot

DependencyInjection/FrameworkExtension.php

@@ -129,6 +129,7 @@
 use Symfony\Component\Notifier\Recipient\Recipient;
 use Symfony\Component\Notifier\TexterInterface;
 use Symfony\Component\Notifier\Transport\TransportFactoryInterface as NotifierTransportFactoryInterface;
+use Symfony\Component\Process\Messenger\RunProcessMessageHandler;
 use Symfony\Component\PropertyAccess\PropertyAccessor;
 use Symfony\Component\PropertyInfo\Extractor\PhpDocExtractor;
 use Symfony\Component\PropertyInfo\Extractor\PhpStanExtractor;
@@ -240,6 +241,12 @@ public function load(array $configs, ContainerBuilder $container)
 
         $container->registerAliasForArgument('parameter_bag', PsrContainerInterface::class);
 
+        $loader->load('process.php');
+
+        if (!class_exists(RunProcessMessageHandler::class)) {
+            $container->removeDefinition('process.messenger.process_message_handler');
+        }
+
         if ($this->hasConsole()) {
             $loader->load('console.php');
 

Resources/config/process.php

@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\DependencyInjection\Loader\Configurator;
+
+use Symfony\Component\Process\Messenger\RunProcessMessageHandler;
+
+return static function (ContainerConfigurator $container) {
+    $container
+        ->services()
+            ->set('process.messenger.process_message_handler', RunProcessMessageHandler::class)
+                ->tag('messenger.message_handler')
+    ;
+};