Not ready for review.
This is just a proof of concept for now to play around with the Blueprint AST.
The main goals of a GTK linters are
Gtk.Image without a11y label
It needs to support CLI for CI and diagnostics on the language server for editor support (Builder, Workbench, …)
Hopefully fixes #124 eventually
It only supports
.blp files at the moment, but I'd like to consider adding support for
.ui files by adding a parser that generates a Blueprint AST.