add Symbol for Nexperia PCMF3USB3S

Common-mode EMI filter for differential channels with integrated ESD protection.

Datasheet:

https://assets.nexperia.com/documents/data-sheet/PCMFXUSB3S_SER.pdf

Screenshot:

This is a symbol with 3 identical units each looking as shown:

Footprint:

• kicad-footprint-generator!827 (merged)
• kicad-footprints!2969 (merged)