support include example or partials from antora

[prudhomm]

with converting antora page have include::example$ or include::partial$ the path are not properly resolved and the inclusion fails in the jupyter notebook.

an example is here https://docs.feelpp.org/toolboxes/latest/csm/ribs/index.html

this is perhaps related to #18.

[prudhomm]

here is another example

check out the antora page here : https://feelpp.github.io/cours-tan/cours-tan/chap4/3-splitting.html#_jacobi

[ggrossetie]

Issues #11, #18 and #21 are related. As mentioned in #11 (comment) it won't be fixed in this repository.

We need to create an "Antora Jupyter Extension" which will rely on both Asciidoctor Jupyter and Antora Extension to resolve resources using Antora's contentCatalog.