Register the idle connection listener

[alli83]

linked to symfony/symfony#53214

This pull request introduces a solution based on the RoadRunner bundle's Doctrine ORM/ODM middleware https://github.com/Baldinof/roadrunner-bundle/blob/3.x/src/Integration/Doctrine/DoctrineORMMiddleware.php.
It checks the status of Doctrine connection, then if the connection is initialized and connected, it performs a 'ping' to check its viability. If the ping fails, it closes the connection.

[nicolas-grekas]

LGTM thanks!
Maybe squash + sync the commit title and PR title?
For the psalm failure, something like this might do it in psalm.xml.dist:

        <UndefinedClass>
            <errorLevel type="suppress">
                <!-- [...] -->
                <referencedClass name=" use Symfony\Bridge\Doctrine\Middleware\IdleConnection\Listener"/>
            </errorLevel>
        </UndefinedClass>

[andersonamuller]

Suggested change

	public function __construct(ArrayObject $connectionExpiries, array $ttlByConnection)
	public function __construct(ArrayObject $expiringConnections, array $ttlByConnection)

[alli83]

If I'm not mistaken, this is a list of expiries and not connections. There were discussions regarding the naming of variables above, and it was decided to use connectionExpiries