Create the pw_bluetooth module.
Create the Bluetooth Low Energy C++ API in the pw_bluetooth module.
This API will be used to wrap various BLE implementations.
Bug: 636
Change-Id: I329c8e0f307d30a26581a43cb46cf2d3dbd35da0
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/84180
Pigweed-Auto-Submit: Ben Lawson <benlawson@google.com>
Reviewed-by: Keir Mierle <keir@google.com>
Commit-Queue: Ben Lawson <benlawson@google.com>