Add HopeRF RFM69CW module based on RFM69HW and RFM9XW footprints

Created by: SeanDS

The companion symbol pull request is here.

This is the footprint for the HopeRF RFM69CW module. This is similar to the RFM69HW and RFM9XW modules already in the KiCad library. It is functionally similar to the RFM69HW, but it has 14 pins instead of 16, and the board size is 16x16 mm instead of 16x19.7 mm. I based the footprint on the RFM9XW and removed pins 15 and 16, shuffled up the rest of the pins, and recentred the footprint on the origin.

The datasheet is here, and the produce page is here.

The board dimensions are on p77 of the datasheet.