In rstudio I believe you can open a latex document like the one you mentioned, modified it and render it or pdf. But you need to have latex all set up.
You cannot easily use a template like this with Rmarkdown, without modifying it first so that the Rmarkdown content would be inserted into the template automatically. It needs to be template
Also Can you open an issue in rticles GitHub repo to ask for those templates to be added in elservier_article? Maybe someone will be interesting to help with that for future usage. Thank you