Make `pre_check` the first argument of `grade_this_table()`?

[rossellhayes]

Should grade_this_table() take pre_check as its first argument (and post_check as its second)? I would imagine changing pre_check code is more common than the correct message, and it would enable slightly more compact code, e.g.

grade_this_table({
  tbl_grade_is_table(.result)
  .result <- .result[intersect(names(.result), names(.solution))]
})

What do you think @gadenbuie?