* Fixed compilation warnings reported by latest versions of GCC
* Reworked handling of temperature sensor
* Clean-up of unused files
* Added instructions and configuration files for packet forwarder auto-start
with systemd
* Added SX1250 radio calibration at startup

HAL accepts to work with both temperature sensors

See merge request LoRa-Gateway/sx1302_hal!1

* Packet Forwarder: Updated TX gain LUT in global_conf.json.sx1250 with proper
calibration

* Initial release for SX1302 CoreCell Reference Design.