Install commonly used R packages

• r-animation
• r-psych
• r-cowplot
• r-ggdist
• r-recommended
• r-metRology (postponned: currently requires a downgrade to R 3.6)
• r-RWiener (no conda package)
• r-psycho (no conda package)
• r-rAverage (no conda package)

R-users: please suggest which packages would be relevant for this server!