GLib logging wrapper

[ianprime0509]

Write a logging wrapper function that the user can use to output std.log logs to the GLib logging system: https://docs.gtk.org/glib/logging.html

This may not actually be possible or worth it, since GLib's g_log does C-style formatting, which is not compatible with arbitrary Zig formatting unless we allocate an arbitrary large buffer for the formatted message. A nice alternative might be to create a wrapper around the structured logging facility instead: https://docs.gtk.org/glib/func.log_structured.html