add: Winbond_USON-8-1EP_3x2mm_P0.5mm_EP0.2x1.6mm

This is a common USON-8 package for winbond, I don't see it being used by other vendors at the moment, so I've added the Winbond prefix.

datasheet: https://www.lcsc.com/datasheet/lcsc_datasheet_2205122030_Winbond-Elec-W25Q16JVUXIQ_C2843335.pdf#page=67