modules: afbr: Add basic functionality

- Add AFBR module as a HAL.
- Platform layer to support running AFBR API using Zephyr.
- Ability to instantiate on device-tree.
- Samples in the module proving foundations works.
- Zephyr Sensor API support, by introducing:
    - Read/Decode for SENSOR_CHAN_DISTANCE (1-D results).
    - Streaming mode for DATA_READY (1-D results).

Signed-off-by: Luis Ubieda <luisf@croxel.com>