Configure to ignore words that are split by underscores/hyphens#29

### Motivation I am finding a lot of false positive where the word is split up by _ and -. I get that evasion detection is a feature but for my use case I want to allow evasive words. So far I haven't been able to find a way to configure it as such. Please let me know if there's a way to do so. For example, I want `test_fun` to not be censored. I tried: ```rust let (censored, analysis) = Censor::from_str("test_fun") .with_censor_threshold( !Type::EVASIVE & RustrictType::MODERATE_OR_HIGHER ) .censor_and_analyze(); ``` But it seems that it's not getting marked as evasive. It censors to `tes****n` ### Proposed solution It would be nice to have an option to only censor the word if the full word is a profanity, so I can split by `_` or whatever I want and pass each word into the profanity filter myself. This would also prevent false positives like `Lifshitz`. Something like this: ```rust let (censored, analysis) = Censor::from_str("test_fun") .with_censor_threshold(RustrictType::MODERATE_OR_HIGHER) .with_only_full_words(true) // defaults to false .censor_and_analyze(); ``` ### Context I am using `rustrict` version `0.7.33`