RJ45: Added Kycon G7LX-A88S7-BP-GY

Added Kycon G7LX-A88S7-BP-GY.

Symbol is based on existing RJ45 symbols but a little bit modified to have a better organization of the pins.

Rx pins have no name in the datasheet. I have called them Rx because they are generally connected to resistors.

MR shows lot of changes due to record of the symbol with KiCad.

Datasheet: http://www.kycon.com/Pub_Eng_Draw/G7LX-A88S7-BP-GY.pdf

Footprint MR: kicad-footprints!2642 (merged)

Image:

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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 symbol(s) you are contributing
• An example screenshot image is very helpful
• Ensure that the associated footprints match the official footprint library
  • A new fitting footprint must be submitted if the library does not yet contain one.
• If there are matching footprint PRs, provide link(s) as appropriate
• Check the output of the automated check scripts - fix any errors as required
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