Raspberry Pi GPIO Perl Modules

Changes for 0.89

• Supports Raspberry Pi 5 Supports Debian 12 - Bookworm Refactored OpenThings / Energenie implementation
• now using pack / unpack for encoding / decoding OpenThings message data
• OpenThings implementation now supports communication with custom devices.
• Added 'Float' OpenThings value type Refactored HopeRFM69 maximum power settings Refactored negative temperature calculation in HiPi::Interface::MPL3115A2