Add Str::tokens helper for tokenizing strings with remove, replace, ignore, and match options

[ahmedsaed27]

This PR introduces a new Str::tokens helper method to the Laravel Str class.
The method allows developers to quickly split a string into tokens and then optionally:

1. remove unwanted characters or substrings,
2. replace substrings inside tokens,
3. ignore entire tokens that should be dropped,
4. match tokens against exact values or wildcards.

[taylorotwell]

Thanks for your pull request to Laravel!

Unfortunately, I'm going to delay merging this code for now. To preserve our ability to adequately maintain the framework, we need to be very careful regarding the amount of code we include.

If applicable, please consider releasing your code as a package so that the community can still take advantage of your contributions!