Created a template for GTK4+libadwaita apps in Vala and Blueprint. I'm trying to learn Vala and GTK, then I found the XML syntax to be absolutely horrible and made this. If there's any issue with the template, please make an issue or pull request, I don't really know what I'm doing :blobfoxcry2: https://github.com/d4r1us-drk/valagtk4-blueprint
