Converts various representations of a Google Sheet into a
sheets_id object. Anticipated inputs:
Spreadsheet id, "a string containing letters, numbers, and some special
characters", typically 44 characters long, in our experience. Example:
1qpyC0XzvTcKT6EISywvqESX3A0MwQoFDE8p-Bll4hps.
A one-row dribble, a "Drive tibble" used by the
googledrive package. In general, a dribble can represent several files,
one row per file. Since googlesheets4 is not vectorized over spreadsheets,
we are only prepared to accept a one-row dribble.