Add additional uniqueInTable TCA Check

[ghost]

Hi, could you please add a check for "uniqueInTable"-TCA option in your SlugUtility.php? I think it should be a quick fix. I have the issue that the Extension will generate duplicated slugs in my tables, when I use the uniqueInTable configuration in my slug TCA config.

Thank you for your great tool :)

[ghost]

I have the same problem at the moment. uniqueInSIte is unworkable in my situation, because records are displayed on multiple domains.

I wrote a fix for this and applied it with composer req cweagans/composer-patches and this extra-section in my composer.json:

"extra": {
  "patches": {
    "internetgalerie/ig-slug": {
      "add uniqueInTable slug check": "https://github.com/faltrock-abone/ig_slug/commit/9d7713f0060faefcf37ce327604b8a935823ec23.patch"
    }
  }
}

(I needed to do composer install twice for the patch to be applied.)

[ghost]

Would be fixed with #19