GTK4 viewer for PPUB files

Billy Barrow efee632257 Re-add link colouring functionality and remove menu button for now %!s(int64=2) %!d(string=hai) anos
src efee632257 Re-add link colouring functionality and remove menu button for now %!s(int64=2) %!d(string=hai) anos
.gitignore e64fe53aa0 Initial commit %!s(int64=2) %!d(string=hai) anos