Add aux dir

general/.latexmkrc

@@ -1,6 +1,7 @@
 $pdf_previewer = 'zathura %O';
 $pdflatex = 'pdflatex -synctex=1 -interaction=nonstopmode';
 @generated_exts = (@generated_exts, 'synctex.gz');
+$aux_dir = 'aux'
 
 # pip install quietex
 # https://blog.mje.nz/2019-07-31-quietex/