Add playwrite Sutterlin (Playwrite DE Traditional)

[tommai4881]

Germany used to have Sutterlin so it is necessary to add Playwrite DE Trad, since Sutterlin is based on German Fraktur blackletter.

[josescaglione]

Hello, at the moment we have only included models currently in use, so historical models such as Sütterlin and Normalschrift have not been developed into working fonts.

[tommai4881]

Oh, why don't you make some?