Add IXYS Flatpack-8 and SMD-8 for the IXYS LOC112

This MR adds two footprints for the IXYS_Flatpak-8_6.4x9.7mm_P2.54mm and IXYS_SMD-8_6.4x9.7mm_P2.54mm for the IXYS LOC112 symbols.

They are generator produced and are related to the following MRs:

Datasheet: https://www.littelfuse.com/media?resourcetype=datasheets&itemid=996c6e8f-cc1b-44f6-811e-251c6e004c56&filename=littelfuse-integrated-circuits-loc112-datasheet

Symbol MR: kicad-symbols!4456 (merged)

Footprint gen MR: kicad-footprint-generator!1098 (merged)

3D model MR: kicad-packages3D!999 (merged)

3D model gen MR: kicad-packages3D-generator!191 (merged)