addef Texas_VQFN-N20_EP3.05x2.05mm for bq5105xB High-Efficiency Qi v1.2-Compliant Wireless Power Receiver and Battery Charger

Created by: cyber-murmel

This is one of the footprints for the bq5105xB High-Efficiency Qi v1.2-Compliant Wireless Power Receiver and Battery Charger.

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

• Provide a URL to a datasheet for the footprint(s) you are contributing
  • http://www.ti.com/lit/ds/symlink/bq51050b.pdf
• An example screenshot image is very helpful
  • No thermal vias
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  • Therman vias
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  • Solder paste
  • 
• If there are matching symbol or 3D model pull requests, provide link(s) as appropriate
• https://github.com/KiCad/kicad-symbols/pull/822
• Check the output of the Travis automated check scripts - fix any errors as required