Transition from crayon to cli

[olivroy]

Before :

This PR:

Summary

• Gets rid of crayon and clisymbols, both superseded by cli

  • Some functions in the print method have their equivalent in cli, cli::cat_rule() is quite handy (you can pass many parameters to ... in cat_rule() https://cli.r-lib.org/reference/rule.html.

• Create clickable links to path in console (had to strip NA to make sure paths were correct. i.e. {.path path/to/file.R:NA} doesn't work. Makes output cleaner, see snapshots

• Use more cli messaging for announcing which steps are taking place. e.g.
  

• The change of character in snapshot only occurs because in non-interactive sessions, cli uses unicode(?) symbols only, but no change in interactive session.

• Removed x argument from gp_footer() as it is unused

Happy to answer questions

[mpadge]

Thanks @olivroy for this excellent improvement. Could you please remove codemeta.json from the PR? (Details there are system dependent, and will create a lot of merge conflicts.) Please also merge the latest NEWS.md, which has just been updated. I'm pretty sure once that's done, we should be good to merge. Please request a review from me when you're ready. Thanks!

[olivroy]

@mpadge Can't request review via gh (not a member), but I addressed your comments and fixed merge conflicts!

[mpadge]

Great, thanks @olivroy

[olivroy]

Glad to see the package under rOpensci!