Include import names in the library list

[dhalbert]

Currently, the library names in https://github.com/adafruit/Adafruit_CircuitPython_Bundle/blob/main/docs/drivers.rst are all descriptive names and do not include the actual library names that one would use in an import: adafruit_whatever, neopixel, asyncio, etc. This was already noted in #342 when the adafruit_hid library could not be found by searching for "HID".

As part of #344, or just manually, it would be nice to include these import names in the list, so that it would be easy to search for them.

[jposada202020]

Maybe we could do this in the following steps:

1. Modify the contents of drivers.rst with the correct import name, and maybe a description as was done for the community libraries as per Adding Drivers Libraries Descriptions CircuitPython_Community_Bundle#132.
2. Once drivers.rst is updated we change the name to libraries.rst as per "Drivers" vs "Helpers" is not so helpful as a top-level distinction #419
   Let me know thanks :)