Switch from magrittr pipe to base pipe and drop magrittr as a dependency

[jbengler]

Discussed in #55

^{Originally posted by mine-cetinkaya-rundel January 20, 2025}
Since the Get Started page starts with a reference to R for Data Science (which features the base pipe operator), I thought it might make sense for the package documentation to use the base pipe (|>) instead of the magrittr pipe (%>%). Is there a specific reason for using %>%? I tried a few of the code examples and it looks like |> could be a drop-in replacement for %>%.