Test nRF5 Measured Power

[CyberSamurai0]

In order to properly calculate RSSI dropoff (and thus distance), we need to do performance testing with the nRF52840 hardware. In particular, we need to measure the transmit power exactly 1m away from the beacon.

[CyberSamurai0]

@dhanishpatil Given that advertising now works (#9), let's aim to do these tests during CNIT546 lab on Thursday 12/4