Better styling for generated Lua API docs
As-is, the generated Lua API docs don't match the styling of the rest of our RTD-based documentation. As described by @ptmikheev on Discord:
- Fork luadocumentor (written in Lua) and modify it a bit -- drop header and footer from all generated pages
- Insert generated html into sphinx pages using
.. raw:: html :file: generated-html-without-header-and-footer.html
- Find a way to run luadocumentor directly from readthedocs pipeline.
Edited by Petr Mikheev