Converter_DCDC: Add library_name as a parameter when building the footprint

This script can be useful for other devices different than DCDC converters.

For instance, it suits ACDC converters, as shown at: !953 (merged)

This MR adds support for a new parameter called library_name in the yaml file so the same script can be used for those as well.

This MR also renames the folder from Converter_DCDC to Converter_ACDC_DCDC, so it can be used for both types.