Handle modules that are moved from a single file to a package

> Update 'adafruit_emc2101'? [y/N]: y
> Something went wrong, [Errno 2] No such file or directory: '/Users/*****/Library/Application Support/circup/adafruit_circuitpython_bundle_7mpy/adafruit-circuitpython-bundle-7.x-mpy-20210417/lib/adafruit_emc2101.mpy' (check the logs)
>

That's because the module changed to a `adafruit_emc2101` directory.

Start from the update operation that reports the missing adafruit_emc2101.mpy path and trace how installed module paths are resolved. Reproduce the transition from the single adafruit_emc2101.mpy file to the adafruit_emc2101 directory; done means updates handle that package layout without the shown file-not-found error.

Written by the indexing model from the issue text.