A regex [`regex`](https://pursuit.purescript.org/packages/purescript-string-parsers/6.0.1/docs/Text.Parsing.StringParser.CodePoints#v:regex) primitive parser would be nice. _Originally posted by @jamesdbrock in https://github.com/purescript-contrib/purescript-parsing/issues/110#issuecomment-925686569_