Merging SlugHelper and SlugHelperForNonAsciiLanguages into a single class with a SupportNonAsciiLanguages property in SlugHelperConfiguration class

[ctolkien]

Discussed in https://github.com/ctolkien/Slugify/discussions/155

^{Originally posted by cemilf March 19, 2025} It seems that it is possible to use single class to support Non Ascii Languages without a separate class.

We can add a boolean property to SlugHelperConfiguration to support NonAsciiLanguages. Than a simple if statement will be enough to call UnicodeDecoder.UniDecode(inputString) method.

if (config.SupportNonAsciiLanguages){    
    inputString = UnicodeDecoder.UniDecode(inputString);
}

var normalizedInput = inputString.Normalize(NormalizationForm.FormD);

What do you think?

Steps:

• [ ] Add new Option
• [ ] If the option has been selected, then preform the decoding
• [ ] Add an Obsolete attribute to the SlugHelperForNonAsciiLanguages with instructions to use the new option
• [ ] Update all the tests to use the new mechanism.