[10.x] Add replaceMatches to Str class

[hosmelq]

This pull request adds the replaceMatches method to the Str class, which is already used in the Stringable class.

I don't think using the Stringable class to call this method is necessary.

This is my use case.

$result = (string) Str::of(file_get_contents($file))->replaceMatches(
    '/^(.*data-public-url=")([^"]*)(".*)$/m',
    '$1<?= e(Storage::disk(\'s3\')->temporaryUrl(\$item->path, now()->addHours(2))) ?>$3'
);

That could be.

$result = Str::replaceMatches(
    '/^(.*data-public-url=")([^"]*)(".*)$/m',
    '$1<?= e(Storage::disk(\'s3\')->temporaryUrl(\$item->path, now()->addHours(2))) ?>$3',
    file_get_contents($file)
);

Thank You!

[huangdijia]

public static function replaceMatches() ??