Added the 3D models Heatsink_125x35x50mm_3xFixationM3 and Heatsink_AA…

Created by: Misca1234

3D models for

Heatsink_125x35x50mm_3xFixationM3 No data sheet link, just went with the foot print

Heatsink_AAVID_573300D00010G_TO-263 https://www.shopaavid.com/Product/573300D00000G

3D model https://github.com/KiCad/kicad-packages3D/pull/461

3D model script https://github.com/KiCad/kicad-packages3D-source/pull/192