Added 3D for OnSemi_SIP-38-6EP-9x7mm_P0.65mm_EP0.95x0.95mm (generated by script)

[cnieves1]

Datasheet: https://www.onsemi.com/pub/Collateral/AX-SIP-SFEU-D.PDF#page=19
Source: easyw/kicad-3d-models-in-freecad#360

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Thanks for creating a pull request to contribute to the KiCad libraries! To speed up integration of your PR, please check the following items as you complete them:

• A screenshot of the model(s) aligned with KiCad footprints is very useful
• Was the 3D model(s) created in a mechanical modelling program?
• Source files (or scripts) have been contributed
• Step model submitted in 1:1 scale
• WRL model submitted in 1:2.54 scale
• 3D model alignment checked against KiCad footprint
• WRL model uses correct material properties
• Geometry check performed against mechanical models