Add IRIDIUM 9602 modem

Have saved the symbol to new file called RF_SAT.kicad_sym . Pretend to add more modules for Satellite communication.

Datasheet: https://fccid.io/Q639603N/User-Manual/Iridium-9602-9602N-SBD-Transceiver-Developers-Guide-V1-2-DRAFT2-2528889.pdf

Footprint PR: kicad-footprints!2882

Screenshot:

I have a question about the RF connectors. At the moment I have the GND independent of the connector. Can they stay like this or should they be shared?

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#General Guidelines: 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:

• Remove the instructional content of this template
• 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
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