Adds POST test for BMP280 sensor board. Includes driver

Dependencies:   BMP280 ELEC350-Practicals-FZ429 BME280

Fork of Task690-mbed-os-FZ429ZI by University of Plymouth - Stages 1, 2 and 3

Revision:
6:4b449e2d4ad1
Parent:
0:1ce5a958aaf8