[Mavlink] MavlinkPigna POC for Main and Payload

src/boards/Main/Configs/RadioConfig.h

src/boards/Main/Radio/Radio.cpp

src/boards/Main/Radio/Radio.h

src/boards/Payload/Configs/RadioConfig.h

src/boards/Payload/Radio/Radio.cpp

src/boards/Payload/Radio/Radio.h

src/boards/RIG/Radio/Radio.h