Add Raytac MDBT50Q

[soburi]

ScreenShot:

Souce files PR is KiCad/kicad-packages3D-source#288.

This commit related with KiCad/kicad-footprints#2390, and KiCad/kicad-symbols#2910.

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Thanks for creating a pull request to contribute to the KiCad libraries! Remember you must be the legal owner of the 3D model! Models downloaded from a manufacturers website cannot be accepted.

To speed up integration of your PR, please check the following items as you complete them:

• [x] A screenshot of the model(s) aligned with KiCad footprint(s)
• [x] Source files are contributed on the apropriate location
  • Link to the package3d-source pull request or to the script pull request
• [x] Step model submitted in 1:1 scale
• [x] WRL model submitted in 1:2.54 scale
• [x] 3D model alignment checked against KiCad footprint
• [x] WRL model uses correct material properties
• [x] Geometry check performed on the model

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[CLAassistant]

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