Added ST_VL53L*X

[valerionew]

New pull request based on the current master, to avoid problems with travis CI.

Deprecates #804, which will be kept open for testing and analyisis purposes upon mantainers' request.
See:
#804 (comment)
#1384
KiCad/kicad-library-utils#302

VL53L0X datasheet: https://www.st.com/resource/en/datasheet/vl53l0x.pdf
VL53L1X datasheet: https://www.st.com/resource/en/datasheet/vl53l1x.pdf

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All contributions to the kicad library must follow the KiCad library convention

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
• An example screenshot image is very helpful
• If there are matching symbol or 3D model pull requests, provide link(s) as appropriate
• Check the output of the Travis automated check scripts - fix any errors as required
• Give a reason behind any intentional library convention rule violation.

[poeschlr]

Thanks