Publishing valadoc for gitg
We can use gitlab pages (See it was done in past) in 0cfd07f8
or in valadoc.org
https://github.com/Valadoc/valadoc-org/issues/61#issuecomment-435722049
Now it is disabled as gnome sdk do not have graphviz and is a complex task to include it. Vala can be patched to build valadoc without graphviz, but seems an unmaintanable task.