Added CI

1 job for master in 4 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
failed #3340
compile

00:00:04

 
Name Stage Failure
failed
compile Build
Latexmk: For rule 'latex', no output was made
Collected error summary (may duplicate other messages):
latex: Command for 'latex' gave return code 1
Refer to 'manual.log' for details
Latexmk: Use the -f option to force complete processing,
unless error was exceeding maximum runs of latex/pdflatex.
=== TeX engine is 'pdfTeX'
Latexmk: Errors, so I did not complete making targets
ERROR: Job failed: exit status 1