[e2e][parallel] Allow set custom config on Parallel

[samsonasik]

@TomasVotruba this seems a reason why downgrade scoper build can't work via Parallel, it because it can't read config via --c because the script is target with --config:

rector-src/build/downgrade-rector.sh

Line 26 in f900476

directories=$(php bin/rector downgrade-paths --config build/config/config-downgrade.php --working-dir $BUILD_DIRECTORY --ansi)

This PR apply:

1. updated WorkerCommandLineFactory to append config for it based on option 'config' https://github.com/rectorphp/rector-src/pull/1620/files#diff-1c7bf20096eedf4dac69e487b7d1e3ad3f9cc122b98d54e145c2f463a2facab9

        if ($input->hasOption(Option::CONFIG)) {
            $workerCommandArray[] = '--config';
            $workerCommandArray[] = $input->getOption(Option::CONFIG);
        }

If no --config input, it will got config from rector.php.

2. Add e2e tests for its demo with pass custom config into input.

[samsonasik]

It seems -c with '--config` got different result:

$input->hasOption(Option::CONFIG)

return true on -c passed, while not for --config

[samsonasik]

I updated e2e script to test passed --config as well

[samsonasik]

Fixed 🎉

[samsonasik]

All checks have passed 🎉 @TomasVotruba it is ready for review.

Next PR is to apply Option::PARALLEL to downgrade config.

[TomasVotruba]

We could put the "if" right into the matrix:

   matrix:
                php_version: ['8.1']
                actions:
                     -
                          directory: e2e/template-extends
                          runner: php ../e2eTestRunner.php -c custom/config/rector.php

[TomasVotruba]

I'm merging this PR to keep original fix and this syntax improvement separated 👍

[TomasVotruba]

Thank you 👍

[samsonasik]

@TomasVotruba here the original PR why -c vs --config is needed in e2e tests parallel