Add latexmk
Add latexmk

 - Configure latexmk to use LuaTeX.
 - Use .bib and clean .bbl
 - Add synctex and run.xml files as generated files

Signed-off-by: Shen Yichen <be3bb257ef8d73236feaba36cd3e5ee9095e6819@gmail.com>

yichenshen/holocron-configs