[NB] Add description string look-up, remove lib

 - Add description string look-up _(e.g., name, URL, etc.)_.
 - Remove Arduino library header files, since they are included in the
   following Arduino libraries:
  - `nadamq`
  - `nanopb`
  - `ArduinoRPC`

 - Return all potentiometer values at once, using an array.