refactor renv and conda into separate virtual env chapters

Author: chendaniely

book/_quarto.yml

@@ -27,6 +27,8 @@ book:
       chapters:
       - lectures/070-filenames-project-organization.qmd
       - lectures/080-virtual-environments.qmd
+      - lectures/082-virtual_env-r-renv.qmd
+      - lectures/085-virtual_env-python-conda.qmd
       - lectures/090-conda-lock.qmd
       - lectures/100-containerization-1.qmd
       - lectures/110-containerization-2.qmd