Custom font and some Bugfixes

Hey!
New release of image edition with Skript :p
I'm introducing a new smal feature, which allow you to register your own font from file or whole folder!
You can then use them with the font expression, via the font's name! (Not the file's name)
Plus, I fixed UTF-8 encode system and big error when we paste two image on each other (return new weird image)
Bye and good afternoon!