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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• 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
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