[Php81] Add NullToStrictStringFuncCallArgRector

[samsonasik]

Add new rule to change null to strict string defined function call args

Fixes rectorphp/rector#6910

[samsonasik]

update: implemented for non-named args.

[samsonasik]

update: implemented for named args as well.

[samsonasik]

@TomasVotruba it seems can be multi position in single function, eg on str_contains, it can pass both 1st and 2nd arg as null in php 8.0, but got deprecated in both in php 8.1, ref https://3v4l.org/pLBuJ

We possibly need to use type detection from parameter if it got string, need to pass as string in the loop:

$positions = [];
foreach ($parametersAcceptor->getParameters() as $position => $parameterReflection) {
            if ($parameterReflection->getType() === 'PHPStan\Type\StringType) {
                $positions[] = $position;
            }
        }

[samsonasik]

implemented multi positions 🎉

[samsonasik]

Apply multi positions seems cause error in CI https://github.com/rectorphp/rector-src/runs/4801793600?check_suite_focus=true

[samsonasik]

CI notice resolved with check args in position exists as Expr 05eb2de

[samsonasik]

It seems still error:

bin/rector process config utils scoper.php --ansi --no-progress-bar
  bin/rector process config utils scoper.php --ansi --no-progress-bar
  shell: /usr/bin/bash -e {0}
  env:
    COMPOSER_ROOT_VERSION: dev-main

                                                                                
 [ERROR] Could not process "scoper.php" file, due to:                           
         "System error: "Internal error."                                       
         Run Rector with "--debug" option and post the report here:             
         
https://github.com/rectorphp/rector/issues/new
". On line: 38           
                                                                               

[samsonasik]

@TomasVotruba I rolled back multi positions automatically by string type check as it is not reliable.

I will update to support define array of arg name, something like:

    private const ARG_POSITION_NAME_NULL_TO_STRICT_STRING = [
        'preg_split' => ['subject'],
        'preg_match' => ['subject'],
        'preg_match_all' => ['subject'],
        'explode' => ['string'],
        'strlen' => ['string'],
       'str_contains' => ['haystack', 'needle'],
    ];

[samsonasik]

implemented define multi positions per function defined 🎉

[samsonasik]

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

[TomasVotruba]

Thank you 👍