Added sample tex and bib file for testing future styles

sample.bib

+@software {cgal,
+  title = {The Computational Geometry Algorithms Library},
+  author = {{The CGAL Project}},
+  editor = {{CGAL Editorial Board}},
+  year = 1996,
+  url = {https://cgal.org/}
+ }
+
+@softwareversion{cgal:5-0-2,
+  crossref = cgal,
+  version = {{5.0.2}},
+  url = {https://docs.cgal.org/5.02},
+  year = 2020,
+  swhid = {swh:1:rel:636541bbf6c77863908eae744610a3d91fa58855;
+           origin=https://github.com/CGAL/cgal/}
+ }
+
+@softwaremodule{cgal:lp-gi-20a,
+  crossref = cgal:5-0-2,
+  author = {Menelaos Karavelas},
+  subtitle = {{2D} Voronoi Diagram Adaptor},
+  license = {GPL},
+  introducedin = cgal:3-1,
+  url = {https://doc.cgal.org/5.0.2/Manual/packages.html#PkgVoronoiDiagram2},
+ }
+
+@softwaremodule{cgal:lp-gi-20a,
+  title = {The Computational Geometry Algorithms Library},
+  subtitle = {{2D} Voronoi Diagram Adaptor},
+  author = {Menelaos Karavelas},
+  editor = {{CGAL Editorial Board}},
+  license = {GPL},
+  version = {{5.0.2}},
+  introducedin = cgal:3-1,
+  year = 2020,
+  swhid = {swh:1:rel:636541bbf6c77863908eae744610a3d91fa58855;
+           origin=https://github.com/CGAL/cgal/},
+  url = {https://doc.cgal.org/5.0.2/Manual/packages.html#PkgVoronoiDiagram2},
+ }
+
+@software {parmap,
+  title = {The Parmap library},
+  author = {Di Cosmo, Roberto and Marco Danelutto},
+  year = {2020},
+  version = {1.1.1},
+  institution = {Inria},
+  license = {LGPL-2.0},
+  url = {https://rdicosmo.github.io/parmap/},
+  repository= {https://github.com/rdicosmo/parmap},
+}
+
+@codefragment {simplemapper,
+  subtitle = {Core mapping routine},
+  swhid = {swh:1:cnt:43a6b232768017b03da934ba22d9cc3f2726a6c5;lines=192-228;
+      origin=https://github.com/rdicosmo/parmap},
+  crossref = parmap
+}

sample.tex

+\documentclass[11pt]{article}
+\author{Inria Software Citation Working Group}
+\date{\today}
+\title{Test document for software entries}
+\begin{document}
+
+\maketitle
+
+This is how the proposed entries are rendered with the style: \emph{standard BibTeX abbrv style}
+
+\begin{itemize}
+\item sofware entry CGAL \cite{cgal}
+\item sofwareversion entry CGAL 5.0.2 \cite{cgal:5-0-2}
+\item sofwaremodule entry Voronoi \cite{cgal:lp-gi-20a}
+\item sofware entry Parmap \cite{parmap}
+\item codefragment entry simplemapper \cite{simplemapper}
+\end{itemize}
+
+\nocite{*}
+\bibliographystyle{abbrv}
+\bibliography{sample}
+\end{document}