BLE LED Blinker example

This example is a fork of the following mbed-os example:

https://developer.mbed.org/teams/mbed-os-examples/code/mbed-os-example-ble-LEDBlinker/

Please read the documentation in this page.

shields/TARGET_ST_BLUENRG.lib/shortlog@9e80cc932b4b: not found in manifest