[fix] change the Utils class to WPUtils to remove error

[NemesisX1]

I had an error in the main.dart where there were the Util to call the logger (instant of Logger) based in the lib/src/utils.dart file. I was just about to rename the Utils class to WPUtils which was the actual correct name in the lib/src/utils.dart

[theeomm]

@all-contributors add @NemesisX1 for code

[allcontributors]

@theeomm

I've put up a pull request to add @NemesisX1! 🎉