Queries the RIDE Data Center metadata API to find enrollment files
that aren't in the hardcoded catalog. Useful for maintainers to
discover when new data has been uploaded.
Value
Data frame of files found on RIDE, with a column indicating
whether each file is already in the catalog
Examples
if (FALSE) { # \dontrun{
new_files <- ride_detect_new_files()
new_files[!new_files$in_catalog, ]
} # }