Added LFCSP-16-1EP_3x3mm_P0.5mm_EP1.5x1.5mm

This is MR associated with kicad-packages3D-generator!186 (merged) and adds the LFCSP-16-1EP_3x3mm_P0.5mm_EP1.5x1.5mm 3D model.

• A screenshot of the model(s) aligned with KiCad footprint(s)
• Source files are contributed on the apropriate location
  • Link to the package3d-source pull request or to the script pull request
• 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 on the model

---

Be patient, we maintainers are volunteers with limited time and need to check your contribution against the datasheet. You can speed up the process by providing all the necessary information (see above).