Add support for a new nRF variant constructed by soldering an E22

[brad112358]

module directly to a Pro Micro type nRF52840 board.

This variant supports the easy DIY pocket node which I have documented with detailed build instructions here: https://github.com/brad112358/easy_E22

This method of construction takes advantage of the flexible pin to function assignment the nRF52 offers to eliminate the need for a breadboard or custom PCB. The Ebyte E22 900M33S LoRa module is actually a very good fit for a battery powered device. The LNA and full 1 watt of output power it provides on 3.7 volts are significant advantages over the bare LoRa chip designs which are so common.

This is my first Meshtastic PR.

Thanks!

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