Implement fw_version.
Implement fw_version.

openmv/openmv,iabdalkader/openmv,iabdalkader/openmv,iabdalkader/openmv,kwagyeman/openmv,openmv/openmv,openmv/openmv,kwagyeman/openmv,iabdalkader/openmv,openmv/openmv,kwagyeman/openmv,kwagyeman/openmv