chore: add gitignore

.gitignore

+# Adapted from https://github.com/github/gitignore/blob/master/TeX.gitignore
+
+## Latex default ignore
+## ----------------------------------------------------------------------------
+
+### Core latex/pdflatex auxiliary files:
+*.aux
+*.lof
+*.log
+*.lot
+*.fls
+*.out
+*.toc
+*.fmt
+*.fot
+*.cb
+*.cb2
+.*.lb
+*.lol
+
+### Beamer
+*.nav
+*.pre
+*.snm
+*.vrb
+
+### Intermediate documents:
+*.dvi
+*.xdv
+*-converted-to.*
+
+
+### Bibliography auxiliary files (bibtex/biblatex/biber):
+*.bbl
+*.bcf
+*.blg
+*-blx.aux
+*-blx.bib
+*.run.xml
+
+### Build tool auxiliary files:
+*.fdb_latexmk
+*.synctex
+*.synctex(busy)
+*.synctex.gz
+*.synctex.gz(busy)
+*.pdfsync
+
+### Ignore compiled pdfs
+*.pdf
+
+## Other ignore
+## ----------------------------------------------------------------------------
+# Mac OS stuff
+*.DS_Store