Check tables for required fields as part of `write_dwc()`

[peterdesmet]

I tried providing the 2015_PHD_VERHELST_COD deposit at https://doi.org/10.14284/435 to write_dwc(). But the columns in our tables have changed slightly since, such as adding tag_serial_number in animals, which is not present in the deposited data.

Hence, I got:

Error in `dplyr::select()` at etn/R/create_animals_occurrence.R:67:3:
! Can't select columns that don't exist.
✖ Column `tag_serial_number` doesn't exist.
Run `rlang::last_trace()` to see where the error occurred.
Warning message:
One or more parsing issues, call `problems()` on your data frame for details,
e.g.:
  dat <- vroom(...)
  problems(dat) 

I think it would be good to capture required columns and provide a nice error. In movepub, we do this with check_ref() and check_gps(), see https://github.com/inbo/movepub/blob/main/R/check_ref.R

Adding on function per table would add quite a lot of functions, so I would opt for a generic check_table(name = "animals") and call it from write_dwc() (cf. movepub).

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This is an enhancement, the current functionality is ok, just a bit hard to debug for the user.

[peterdesmet]

See #540 for the suggested functionality.