Check if packae is installed
Examples
is_pkg_installed("bio")
#> [1] TRUE
is_pkg_installed(c("bio", "utils", "grugru"))
#> [1] TRUE TRUE FALSE
Check if packae is installed
is_pkg_installed("bio")
#> [1] TRUE
is_pkg_installed(c("bio", "utils", "grugru"))
#> [1] TRUE TRUE FALSE