Register Prep Script
register_prep_script.RdConvenience function for a one-time setup of all metadata required for a new prep script. The assumptions are that (1) the prep script is a `.R` file in the `prep-scripts` directory of a directory within the `pipelines` directory and (2) that this script produces a csv file in the `derived-datasets` directory with the same `basename()` as this `.R` file. Messages are printed with paths to newly created and/or existing metadata, derived data, and dependency files that should be checked manually. Sometimes it is helpful to delete some of these files and rerun `register_prep_script`. However, this `register_prep_script` function should not be used in a script that is intended to be run multiple times, as going forward the metadata and dependency files should be edited manually.