Better support for SVGs when building LaTeX

[oscargus]

Another issue, I realize from the tests, is that SVGs are not supported by LaTeX out of the box. Of course it is a bit expected, but I wonder if one should add support for converting SVGs to PDFs? Or mention, e.g., https://pypi.org/project/sphinxcontrib-svg2pdfconverter/ in the documentation?

Originally posted by @oscargus in #1138 (comment)

This should probably be handled both in the doc-test scripts as well as in the documentation.

Edit: there is a warning in the documentation about it
"SVG images do not work with latex build modes, thus will not work while building a PDF version of your documentation."

Maybe that can be expanded a bit?

[lucyleeow]

I recall some discussion about support for non-html builders: #697

Not sure if our thoughts on this has evolved.

[lucyleeow]

Maybe that can be expanded a bit?

+1 sounds like a good idea!