count quantities with mecab japanese

[ProgramComputer]

Recognize quantities as words such as 二十五 or 十五 using mecab.

[HugoFara]

Hi @ProgramComputer ! I have reviewed and merge your commit, thanks for the PR!
Just for the record, here is how LWT used to parse:

Here is the new result:

To be honest I was aware of the issue, but did not find it concerning as numbers are roughly fifteen characters. But I was already told it existed, LUTE published the feature and now you come with a PR request so I changed my mind and I'm glad it is implemented!