Add more classNames to customize suggestions related elements

[sitek94]

Hey there, awesome library!

It'd be nice to have an option to pass custom classes not only to suggestions wrapper, but also to ul and li elements. We wouldn't have to create an extra .css file just to add those:

.ReactTags__suggestions {
  @apply z-50 absolute mt-2 w-full overflow-hidden rounded-lg bg-white shadow-lg;
}
.ReactTags__suggestions ul {
  @apply max-h-64 overflow-y-auto;
}
.ReactTags__suggestions li {
  @apply cursor-pointer p-2 text-sm text-gray-700 hover:bg-gray-100;
}

I think, it shouldn't be hard to accept more props there, and I could work on a PR, if you like the idea :)

Cheers!

[ad1992]

@sitek94 not sure what you mean by extra css file but you will not need an extra .css file to add these, you can add it in the same file where your other CSS is added