Add TSSOP16 variant with EP
Created by: einball
Scripted footprint for Allegro A4954:
Symbol PR: https://github.com/KiCad/kicad-symbols/pull/2399 Generator PR: https://github.com/pointhi/kicad-footprint-generator/pull/615 Datasheet: https://www.allegromicro.com/-/media/Files/Datasheets/A4954-Datasheet.ashx