Exception " Argument 1 passed to setSourcePid() must be of the type int, string given"

https://github.com/CodersCare/l10nmgr/blob/3ee71720066bafdf2c5abd736c1f97c6f3ae61ec/Classes/Command/Export.php#L234C9-L235C50

```php
$sourcePid = $input->getOption('srcPID') ?? 0;
$l10nmgrCfgObj->setSourcePid($sourcePid);
```

Options retrieved from `InputInterface` are strings, not integers.