devel/R-cran-fontawesome: Add new port

Easily and flexibly insert 'Font Awesome' icons into 'R Markdown'
documents and 'Shiny' apps. These icons can be inserted into HTML
content through inline 'SVG' tags or 'i' tags. There is also a
utility function for exporting 'Font Awesome' icons as 'PNG' images
for those situations where raster graphics are needed.

WWW: https://cran.r-project.org/web/packages/fontawesome/