• new feature for Automatic object to Expression conversion #420
• BC break? no

This commit brings Dibi\ObjectTranslator which allows to translate any object into Dibi\Expression. For example:

class Translator implements Dibi\ObjectTranslator
{
    public function translateObject(object $o): ?Dibi\Expression
    {
        return match (true) {
            $o instanceof Person => new Dibi\Expression('?', $o->id),
            $o instanceof IpAddress => new Dibi\Expression('?::inet', $o->address),
            default => null,
    }
}

$db->setObjectTranslator(new Translator);
$db->insert('table', [
    'person_id' => new Person,
    'from_ip' => IpAddress::fromGlobal(),
]);

Some notes:

• object translator is never used when value modifier is used
• the Dibi\Literal and Dibi\Expression is never passed into object translator
• object translators can be chained via Connection::getObjectTranslator() getter
• even it's not so important, I've run tests locally on SQLite, MariaDB, PostgreSQL, SQLServer (and its PDO variants)

Before this PR I've tried another a little bit different approach - set object translator per class:

$db->setObjectTranslator(string $class, ObjectTranslator $translator);

It is probably more deterministic but it is harder to setup a lazy Dibi\Translator and it brings problem with searching object translator for child classes.